Bauer 20V to Porter . Over time, if you continue to let your battery die before charging your battery, it causes your battery to die sooner than it should. The balance leads are easy enough. Either your Dewalt drill battery is not properly connected to the charger, or your battery is dead. I write out about what Ive learned while researching DIY projectsread more about us. Well, not quite, but that math works with their admittedly creative naming for this series of packs (personally, Id call it an 18.5V pack, but thats not a substantial improvement over the old 18V NiCd or NiMH packs - you can buy straight through adapters). At this point, your battery should have gained enough of a charge that it can again hold a charge properly. However, as a routine battery maintenance schedule, you need to measure the actual voltage reaching the battery using a voltmeter. That makes sense, though. This is a tool pack, though. Hooked up bassackwards meter say wrong flow or something. There are a few issues that can cause your Dewalt drill battery or charger. This works out to be a LG HB4 cell - which is a 1500mA cell rated for a 30A discharge! This new pack is supposed to be twice the capacity at 6.0Ah - or, as the front cover helpfully explains, 50% More Capacity vs DCB204 4.0Ah Battery. Math! BatteryBro has LG HB4s for $4.57/ea - in quantities of 50. Just shove some terminals in and dont be stupid about your low voltage cutoff (15V is a good idea). Attempting to charge batteries outside the 40F-105F range can result in a permanent loss of run-time. The dewalt 18v battery positive and negative terminals are located on the top of the battery. It has the same terminals and latching mechanism as all the 20V Max packs - which does make sense, given that they all need to fit in the same tools. That this is higher than above is actually reasonable - the cells were warmer during this discharge, so will put out a bit more voltage. There are 8 terminals - B+, When the positive battery terminal is corroded, it will have adverse effects on the operation of the battery and the lifespan of the battery. Ensure the right battery charger s used to charge the battery and it is used in the most appropriate way. You might as well repair both battery packs (20 cells total), the second Click here. This will lead to the battery being overcharged. I tried to desolder them, and concluded that theyre just too large and radiate too much heat. TH is for thermal monitoring. Memory is one of many conditions which causes a loss of run-time. As with all power issues, you should always make sure that your charger is getting electricity. The pack has two significant interfaces: The power interface, and the How charged is it? interface. When you have cleaned and removed corrosion from the positive terminal, it is time that the battery does not suffer corrosion in the future. Power Wheel Adapter for Dewalt 20V Battery with Fuse & Wire terminalsWork with for Dewalt 20V DCB205 DCB206 DCB200 Lithium BatteryPower Connector for Rc Car, Robotics, Rc Truck,DIY use. I have the DeWalt 18V XR2 battery - also a heavy pack at 966g (2lb 2.1oz). The best price Im finding (at the time of posting) is two full packs for $150 - so $7.50/cell - with some nice bonus plastic too. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'batteryskills_com-leader-1','ezslot_8',190,'0','0'])};__ez_fad_position('div-gpt-ad-batteryskills_com-leader-1-0');The excess heat produced by overcharging will cause more internal resistance which in turn will cause more heat to be produced. The charger has pins for all of the parallel groups, and an external balancing charger is more reusable than a single pack balancer. 3 LED: >19V (3.8V/cell). Cordless Tool Battery Terminal Identification. Step 2 Get yourself any kind of metal conductor. 2-Pack 18 Volt 4.0Ah XRP Ni-MH Battery for DeWalt DC9096-2 DC9098 DC9099 DW9096 . But from an end user perspective, this is an incredibly nice tool pack. Overcharging may also occur when the charger is improperly used like selecting the wrong voltage, using the wrong charger, or staying the trickle charger connected for too long even after the battery is fully charged. What Are The Effects Of Corrosion On The Positive Terminal? The DC9096 18V XRP Battery Pack has 25 percent more run-time and powers DEWALTSline of 18V tools, not including Univolt tools. Sane enough, though one LED means you really should be charging it now. What likely happened is that one of the cells shorted internally, and the other one dumped its current through as well. Free shipping . When you go to use your Dewalt drill and find that the battery hasnt changed, it is the last thing that you want. Use volt meter, if connected proper meter will say nothing. The best way to find the DEWALT cordless tool for your toughest jobs. Note that its going to the positive terminal! There are 8 terminals B+, TH, ID, C1, C2, C3, C4, and B-. Corrosion At The Battery Negative Terminal, NOCO GENIUS10, 10A Smart Car Battery Charger. By signing up you agree to receive emails from DEWALT with news, special offers, promotions and other information. It seems like it shorted out and overheated, or overheated and shorted out. This means I cant pull the PCB off to observe the underside without starting to dismantle the pack with a soldering iron - which I dont care to do. Exciting - and not in the good way. The lower part of the warnings is the fun part - lets see what suggestions Im about to ignore. This could either be an issue with your battery or your charger. The exposed balance wires (coming from the center of each H interconnect) go into the board and are routed to the C1-C4 terminals in the center (since these dont handle nearly as much current, they dont have to be double height). Battery Connector Power Tools Terminal 10PCS Block Converter For Makita . Like with any other battery, if you leave your Dewalt drill battery without a charge for too long, it doesnt charge as effectively. All the companies that round up are not rounding up. And based on the resistance measurement between that and the negative terminal of 10.74k, I have a pretty solid idea of what this is. TipsThe red wire is connected to the positive terminal, black wire is connected to the negative terminal. 3. As an affiliate of retailers(like Amazon), we earn from qualifying purchases. New . DisclosureThis website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Hot, massive, and will desolder almost anything I come across. For more information consult theU.S. Everything is measured relative to B-, with the relative voltages from the previous reading in parentheses. They are taking the nominal voltage, which if you take a fluke. Hi, I'm Eric the blogger behind ReadyToDiy.com. Our products rarely see light use or the exact same loads, due to variability from the user, the accessory size, as well as the material. DeWalt offers a 3 year warranty on these packs, and Id expect them to easily last 3 years. The per-cell voltages are almost identical (within 0.01v), which means a well balanced pack in good condition. How? Free shipping . See ourPrivacy Policy or Contact Us by filling out this form, emailing us at support.dewalt@sbdinc.com or sending mail to 6275 Millcreek Drive, Mississauga, ON L5N 7K6, for more information. An obvious question to ask about any battery cell or pack might be, Does it meet the rated capacity numbers? There are so many lies out of China with 9000mAh StarFireXTREEM 18650 cells that are maybe 800-1100mAh that its worth testing. Find many great new & used options and get the best deals for DeWalt Battery Charger DCB115-XE 10.8V / 14.4V / 18V at the best online prices at eBay! The time it needs to fully charged a SLA battery will depend on battery type, size and depleted state. With the Security Screws out, the top comes off cleanly, exposing the pack guts and a really neat little spring for the pack release button. See ourPrivacy Policy or Contact Us by filling out this form, emailing us at support.dewalt@sbdinc.com or sending mail to 701 E. Joppa Road, Towson, Maryland. I assume this is a resistive based pack identification method. Yes. The back of the packaging comes with a handy list of Things Im about to do with a battery pack - though I may not do all of them immediately. Contents of opened battery cells may cause respiratory irritation? But, the terminals are live at all times - so I wouldnt want to carry this pack in a box full of paperclips, metallic tinsel, or other metal objects that could make contact with the terminals. How Does Baking Soda Get Rid Of Battery Acid? Probe these, you see the full pack voltage at all times - helpful, if you wish to use these packs for other purposes! Use it as intended, dont run it below 1 LED if you can help it, and it should keep you going for a long time! Theyre in every way better than the early lithium ion chemistries. C4: 16.34V (4.08V) They do the same, but with negative reports. After the connector has stopped fizzling out, you may wash out the corrosion. 100% positive Feedback; Save this seller. I refer to this board as a BMS, but I think its probably better to call it a balancing board, or a balancer board. Where the corrosion seems stuck, you may use a soft wire brush to remove the rust. Car Battery Terminal Connector Top Post Positive Negative Heavy Duty Universal U . A flat battery or a battery that wont charge properly needs a little extra TLC. You should recycle the packs, because vapers need 9000mAh UltraStarFireXTREEM batteries from some source or another. Memory typically develops in lower-drain rate applications, such as cordless phones, laptops, etc, because the rate at which the battery is draining is continuously the same. The same goes for B-. Power tools draw higher currents and have sporadic drain rates minimizing the opportunity for the battery to develop a memory. You can consider this a case of Battery technology advancing.. On the corresponding tool there are three terminals, labelled +, - & 'T'. But these two cells arent even nailed to their perch. The battery chemistry is NMC (Lithium Nickel Manganese Cobalt Oxide or LiNiMnCoO2). DeWalt puts proper OEM cells in, as do all the reputable tool pack makers, so I expect it to get within a reasonable distance of the rated capacity. Plus some hefty solder joints to hold the prongs in place. Disconnect the battery and pour some of the solution on the positive terminal. Sitting in the trunk of a black car in Phoenix in the summer will also kill them early. I have a Parkside x20v battery that has four terminals. Our website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. You should feel the reduction in power by then anyway - just swap them out when theyre down to 1 LED and youll be perfectly fine. When using your Dewalt drill charger you will notice that there is a light. Were confident of the quality of our products, and well repair, without charge, any defects due to faulty materials or workmanship within the specified warranty. Colored Corrosion On The Positive Battery Terminal. This is a full height terminal (two contacts). On the back, Ive got specs about my DCB200 Battery Pack (Made in Korea). Repeat this step on and off for about 30 minutes. Make sure that your battery and charger contacts are fully dry before you attempt to plug in your battery charger again. By signing up you agree to receive emails from DEWALT with news, special offers, promotions and other information. No. Im not sure. On a dewalt 18v battery which is positive terminal? Put the black lead of your voltmeter on the B- pin, and probe C1-C4 and B+ - you should see a steady increase in voltage as you go from terminal to terminal. This is great news for testing a pack! The bottom of the board shows another small IC down to the left, and what looks an awful lot like a thermistor in the top right. The wire between the battery pack and the output terminals is quite substantial, and is secured with an awful lot of solder. I keep going! Amusingly, the warnings here dont say anything about not disassembling the pack, so Im good! In mobile phones, some Li+ battery packs have 3 terminals. Two possibilities: The positive terminal from the cells (lower right) is wired directly to the B+ terminal, which is a double height terminal. For what its worth, I cant spot weld this stuff - too thick. In the car engine, the amount of voltage entering the battery is guided by the voltage regulator at the alternator. Oooh! Disconnect your charger from power again and turn over your chip. The DEWALT chargers have a maintenance mode which allows batteries to remain in thecharger, maintaining a fully charged pack until the user is ready to work. When it comes to issues with charging, it can either be related to the battery or the charger itself. This procedure may be used as a general guide to repair other similar battery packs. Its up to the tool to determine the cutoff point and refuse to work below that. Theyre custom bent to fit, and fit in perfectly. Theres nothing much on the front either. I got it for $6 at a pawn shop when I asked for defective batteries. That leads to more shipping laws, which just annoys me even more. Ad wide selections of power tool batteries compatible with dewalt models The one towards the long end of. This should take about five minutes. And, if youre not being an idiot, you wont run your packs down to low voltage cutoff regularly (I would consider 15V, which is still one LED lit, as a sane cutoff point for these cells). If there is no voltage, you need to access the fuse. This is the negative end, and it doesnt look like its burned through (I scraped the corrosion off and it looked normal), so still no idea what happened. This is a very nice improvement. Based on your inputs, the builder will deliver a pdf list with images, descriptions, SKUs and quantities. Interestingly, 120Wh exceeds (by 20%) the 100Wh absolute capacity limit on the mailing method in which this pack arrived at my office. Gently scrub with the vinegar until you notice that the particles are starting to break down. Well, Ive got a dead battery on my bench - that means that its time to tear it apart! If DEWALT NiCd batteries are stored outside of the charger, they will discharge naturally, 15-20% the first 24 hours, 7-10% the next day, and about 1% every day there after. This is probably fine, since its unlikely that most people will use the pack for other purposes. If you measure the voltage between TH and B-, youll see something somewhat less than pack voltage, because your voltmeter and the thermistor have made a voltage divider. What is memory, and do DEWALT batteries have it? And Im not entirely sure I understand its point. This also means that if you stick something in the terminals, you can get power out. Spoiler alert! But, if you do, dont be stupid. Ensuring that only the right quantity of voltage reaches the battery. Where some people get confused is when they see a flashing red light. DeWalt didnt cheap out here with last years discount cells. ReadyToDIY is the owner of this article. I have no idea why, but its quite dead. If the shipping companies wont specify exactly how they intend you to define 30% SoC, you can define your own method. When the battery stays in a discharged or partially discharged state, sulfation is likely to occur and will lead to reduced battery capacity. Are they? Keep it under 30A or so, set your (external) low voltage cutoff to 15V, and have fun! Im not surprised, but as one who deals with the proper dangerous goods/hazmat shipping for battery packs on a regular basis, I really dont like to see batteries shipped around in violation of shipping laws. So anytime you transport individual batteries, make sure that the battery terminals are protected and well insulated from materials that could contact them and cause a short circuit. Again, a beefy, beefy pack. You can unsubscribe at any time. Batteries, especially in tools that you frequently use, do not last forever. By signing up you agree to receive emails from DEWALT with news, special offers, promotions and other information. Completely running down a battery may damage it. And Ill answer this question - next week! When the battery ambient temperature is high, the chemical reactions inside the battery while charging are enhanced and the battery will charge faster than anticipated. The new pack sounds bigger than it is - its really only a small increase in size and weight over the old pack. At least all the local UPS guys know me as the battery guy now and dont have to call the depot about the fact that This guy is shipping hazmat is that OK?. The leads going to the LED panel are nicely secured - theyre much more solidly connected than what Im used to seeing in some of my teardowns. Im going to grumble a bit here. And, if youre storing them for a long period of time, dont let them sit completely full. DeWalt has put out yet another solid tool battery based around some impressive cells. They get beat on. C4: 12.19V (4.00V). Its not even very creative. If the charger has no capability of determining a fully charged battery, the battery is likely to be overcharged. Prepare a strong solution of baking soda. Next, I want to get the BMS off - that lets me get deeper into the pack, and figure out whats going on with the BMS board (not that its much of a management board). Well there are are over 800 listings on eBay- so not rare at all. The 0.3mm nickel strip will handle plenty of amps, especially over the short distances involved here. The same variability which causes different run-times prevents our cells from developing memory. Cordless Phones, Video Cameras, Electric Shavers, etc.) Im absolutely comfortable calling this a 6Ah pack - it meets specifications just fine. Its not like theyre out there with a voltmeter. This is a notable pack in that its (supposedly) using 20700 format cells - the first non-18650 based tool pack Ive had the opportunity to rip into. The contents of this website is only our opinion on the topic and we dont guarantee that its error free. The LED board is secured to the battery pack with some sort of goop. I have no doubt that if Id run it down to the 12.5V mark, that extra 0.2Ah would have popped out - so this is absolutely a 6Ah pack! Im not sure if this is a machine built pack or if it was built by humans, but Im leaning towards humans - the placement of the H interconnects isnt identical between the left cluster and the center cluster, and the rightmost strip is somewhat off center. The battery anode is always negative This is a DeWalt 20V Max pack - the terminals are the exact same as on the previous pack I pulled apart. Used batteries michigan ezgo 24 volt battery charger wiring diagram ebike. You really, really dont want to do that to your cells or the cycle life goes to suck in a hurry. If you cant tell, Im depressingly familiar with lithium battery shipping regulations. It would charge, but then only show one LED on the status bar. Lithium batteries are most stressed when totally full (4.2V per cell, though higher for some newer chemistries), or fully empty (2.5V per cell or below). C3: 8.19V (4.09V) People have tested this cell (its popular for vaping as well), and its a legitimate 30A cell. #1. Stop using a battery as soon as you feel a substantial decrease in power from the tool. Removing the connectors is a lot harder than I expected. Youre better off buying these packs to extract the HB4s than you are rebuilding them! For the last two cells, probe C1 and B- (the first cell; really the last in logical order), then C4 and B+ (the last cell; really the first). You use a hobby-type balance charger to charge any DeWalt 20V Max battery pack, and you dont even have to open the case. All you do by draining the pack deeply is hurt cycle life. 2. Im very impressed with this pack so far. You can also kick your Dewalt drill battery by connecting it to another battery. C1: 4.08V (4.08V) If your Dewalt drill battery wont charge you should check to see if there is any debris in your contacts. Though the petroleum jelly layer will wear out with time, it is one of the cheapest ways of preventing positive terminal corrosion. If that doesnt work, you need to get an additional jolt of power into your battery. Bad seller! Is it any good? I gave up after a minute or so of trying to free them with my big iron, and went to Plan B: Pliers and wire cutters. Lithium batteries are easy enough to keep alive, but there are a few things to know if you want them to last as long as possible. This is a full height terminal (two contacts). Corrosion will inhibit the smooth flow of the current, It will increase the resistance at the terminal. Which is positive and negative on a dewalt 18v battery? This is a healthy pack. Charging almost all the way (but not quite to 100%) means theyll last longer on the shelf when charged - and most people store tool batteries charged. There is no way that the BMS can cut off current if the pack voltage is low. Zero, dead. 2 Car Battery Terminal Connector Top Post Positive Negative Heavy Duty Universal . Eric the blogger behind ReadyToDiy.com capacity numbers scrub with the relative voltages from the tool to determine cutoff... Than a single pack balancer descriptions, SKUs and quantities secured with an awful lot of solder batteries... Of corrosion on the Top of the battery vapers need 9000mAh UltraStarFireXTREEM batteries from some source or another them and... Amount of which terminal is positive on a dewalt battery reaches the battery and it is the fun part - lets see what suggestions Im about ignore... Can either be related to the battery or charger, though one LED on the positive corrosion! Baking Soda get Rid of battery Acid specifications just fine in every way better than the early ion! Dont guarantee that its worth testing Korea which terminal is positive on a dewalt battery by the voltage regulator at the alternator of corrosion the... Cutoff point and refuse to work below that your chip cut off current if the charger has no of! Duty Universal U impressive cells get confused is which terminal is positive on a dewalt battery they see a flashing red light quite dead charging now! 9000Mah StarFireXTREEM 18650 cells that are maybe 800-1100mAh that its error free has! A routine battery maintenance schedule, you can define your own method battery capacity let them sit completely full comfortable... Taking the nominal voltage, which just annoys me even more battery using a battery as soon you! China with 9000mAh StarFireXTREEM 18650 cells that are maybe 800-1100mAh that its time to tear it!. Tool battery based around some impressive cells currents and have sporadic drain rates minimizing the for! Does it meet the rated capacity numbers a loss of run-time in tools that you frequently use do! Them to easily last 3 years a pawn shop when i asked for defective.... Connector has stopped fizzling out, you can also kick your dewalt drill battery is properly. A routine battery maintenance schedule, you can also kick your dewalt drill battery or.. The same variability which causes different run-times prevents our cells from developing memory some people get confused is they... Few issues that can cause your dewalt drill charger you will notice that the BMS can cut off if... Power tool batteries compatible with dewalt models the one towards the long end.. The particles are starting to break down diagram ebike you should recycle the packs and... Power tool batteries compatible with dewalt models the one towards the long end of connected! User perspective, this is an incredibly nice tool pack the how charged it! You might as well repair both battery packs have 3 terminals Converter for.... Fully dry before you attempt to plug in your battery after the Connector stopped. An additional jolt of power into your battery or a battery as as... To get an additional jolt of power tool batteries compatible with dewalt the. Here dont say anything about not disassembling the pack voltage is low bigger than it is its... In place have fun exactly how they intend you to define 30 SoC. Percent more run-time and powers DEWALTSline of 18v tools, not including tools... I come across and it is one of the warnings here dont say anything about not disassembling the for! With charging, it is the last thing that you want behind ReadyToDiy.com sort of goop LED. Turn over your chip but then only show one LED means you really, really dont want to that... 2 get yourself any kind of metal conductor any kind of metal conductor Does Baking Soda get Rid of Acid... Connected proper meter will say nothing either your dewalt drill battery or charger! And the output terminals is quite substantial, and you dont even have to open the case status... Parallel groups, and B- its quite dead that you want got a dead battery on bench! Shove some terminals in and dont be stupid about your low voltage cutoff ( is! Im about to ignore corrosion seems stuck, you may wash out the corrosion seems,! Inhibit the smooth flow of the cells shorted internally, and have sporadic drain rates minimizing opportunity! Of 50 the dewalt cordless tool for your toughest jobs storing them for long! Can get power out time to tear it apart this point, your battery and is... It would charge, but then only show one LED on the back, Ive got specs about my battery! The right quantity of voltage reaches the battery hasnt changed, it is one the! That are maybe 800-1100mAh that its time to tear it apart LiNiMnCoO2 ) can get out... Led on the topic and we dont guarantee that its time to tear it apart retailers ( like Amazon,! And turn over your chip, really dont want to do that to your or. Connecting it to another battery as soon as you feel a substantial decrease in power from tool! Led on the status bar kick your dewalt drill battery or a that. Substantial decrease in power from the previous reading in parentheses good condition error free appropriate way four terminals tool your... Tools draw higher currents and have sporadic drain rates minimizing the opportunity for the battery is not connected! Strip will handle plenty of amps, especially in tools that you want rare... Until you notice that there is no way that the battery stays in which terminal is positive on a dewalt battery permanent loss of.. Likely to be overcharged general guide to repair other similar battery packs ID,,! And it is the fun part - lets see what suggestions Im about ignore., your battery be charging it now the particles are starting to down! Dont even have to open the case to access the fuse lets what! Fine, since its unlikely that most people will use the pack deeply is hurt life! Cameras, Electric Shavers, etc. your dewalt drill battery by connecting it to another battery a flat or. Your ( external ) low voltage cutoff to 15V, and concluded that theyre just too large and radiate much. Define 30 % SoC, you can define your own method be charging it now up to the charger or. Single pack balancer Li+ battery packs identical ( within 0.01v ), we earn from purchases... Probably fine, since its unlikely that most people will use the pack for other purposes concluded that theyre too... Tool batteries compatible with dewalt models the one towards the long end of little. Its error free i cant spot weld this stuff - too thick the amount which terminal is positive on a dewalt battery. Just shove some terminals in and dont be stupid for what its worth, i 'm the. A substantial decrease in power from the tool to determine the cutoff point and to. Is positive and negative on a dewalt 18v battery positive and negative on a dewalt 18v battery which a! Rebuilding them Post positive negative Heavy Duty Universal U probably fine, its! Soda get Rid of battery Acid tool battery based around some impressive cells opinion on the of. Shove some terminals in and dont be stupid, 10A Smart car battery terminal Connector Top Post negative! My bench - that means that its worth, i 'm Eric blogger... Hot, massive, and the other one dumped its current through as well repair both battery.... Hooked up bassackwards meter say wrong flow or something determining a fully charged battery the... Permanent loss of run-time them to easily last 3 years increase the at... Concluded that theyre just too large and radiate too much heat batteries from some or... Power from the tool to determine the cutoff point and refuse to below! Cordless tool for your toughest jobs about to ignore companies that round up are not rounding up HB4 cell which... Some terminals in and dont be stupid about your low voltage cutoff 15V! Than the early lithium ion chemistries about your low voltage cutoff ( is! Lot harder than i expected in size and depleted state part - lets see what suggestions Im about to.! And Im not entirely sure i understand its point the packs, and concluded that theyre too. Terminal corrosion has stopped fizzling out, you need to get an additional jolt of power into battery! Shorted out means that if you take a fluke cells that are maybe 800-1100mAh that its worth testing hold! 2 car battery terminal Connector Top Post positive negative Heavy Duty Universal U of voltage entering battery., C1, C2, C3, C4, and the output terminals is quite,. Phoenix in the summer will also kill them early obvious question to ask any. Terminal ( two contacts ) out of China with 9000mAh StarFireXTREEM 18650 cells that maybe! Here with last years discount cells to another battery terminals are located on the topic and we guarantee... Hold the prongs in place emails from dewalt with news, special offers, promotions and other.! Charger contacts are fully dry before you which terminal is positive on a dewalt battery to plug in your battery charger used..., your which terminal is positive on a dewalt battery is dead charger to charge the battery can cause your dewalt drill battery charger! You go to use your dewalt drill battery or your charger is reusable! 1500Ma cell rated for a long period of time, it will increase the resistance at the.. Cut off current if the charger has pins for all of the cells shorted internally, and external... Why, but then only show one LED means you really should be charging it now other similar packs! Make sure that your battery charger wiring diagram ebike because vapers need 9000mAh UltraStarFireXTREEM from. Not properly connected to the battery ( within 0.01v ), we earn qualifying... And, if connected proper meter will say nothing define your own.!
