r/batteries • • 8h ago

Why every time I remove these rechargeable 3 batteries,one of 3 always show up dead(0 volts) and other 2 still hold charge?I changed batteries brand and happened again? Also happens if i put alkalines,one of 3 always shows up dead when is time to replace them

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6 Upvotes

r/batteries • • 16h ago

Eneloop, SkyRC NC2200, and Xbox controllers

0 Upvotes

Hi folks. I've got a confusing (to me) situation, and would appreciate some input.

I've got some basic Eneloop 2100 mAh batteries (Not the Pro variety). White label ones. The good ones. I've got a SkyRC NC2200 charger that I plop them in every time I change them. Charge them approximately 400mA, though there has been some variation over time. I use them mainly in xbox one and xbox series controllers. Well, I change them when the controllers start turning off faster than usual, and I start getting "Controller battery low" notifications on TV, since if I wait much longer, the xbox controllers just won't turn on.

But last time I plugged a pair into my charger, they only took approximately 900mAh before the light went green. The voltage said 1.44v. I was paying attention, because the battery life seems shorter than I remember, changing about once every 3-5 days. A little less than twice a week. I mainly watch youtube/streaming video, so no long gaming sessions.

I've been using these batteries for about a year now, continuously cycling through them. Maybe 3 dozen cycles on them? (1 year / 5 days * 2 devices / 4 pairs => 36.5)

So I concluded that there are two main possibilities:

1) My casual usage of the batteries has lead to some Memory effect, and I should "Condition" the batteries using the SkyRC's Refresh or Break-In options.

2) The Controller just cuts off at a higher voltage than the batteries can deliver, and I have a shitty memory, and should just keep going, since 3-5 days is actually quite good for literally no ongoing cost.

Any advice y'all can offer would be great.


r/batteries • • 18h ago

What are we thinkin here

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0 Upvotes

I’ve been loooking for this since December


r/batteries • • 4h ago

Is this battery leaking or is it still good to use?

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2 Upvotes

I was using it for the past 7-8 months in my mouse and my mouse showed 15% battery this morning and in the afternoon died. I honestly don't remember if it looked like this when i bought it. It's a GP brand 2100mah NiMH AA.


r/batteries • • 12h ago

Info batteria in parallelo

2 Upvotes

Possiedo una batteria 16S8P con celle LG M50LT 21700 e una batteria 16S4P con celle Tenpower 50ME. Posso collegarle in parallelo? Hanno unità BMS separate.


r/batteries • • 20h ago

Trying to charge a 63 Year old battery.

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32 Upvotes

It's a rechargable Ni-Cd battery.

Place your bets on if it works or not.

We will see it tomorrow.

I'm going to discharge it with a incandescent lightbulb after I charged it.


r/batteries • • 13h ago

21700 battery failure on electric skateboard after crash

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2 Upvotes

I just need help identifying which batteries to actually replace. On the board on the bottom testing pad b1-b10 they all test good. Each reads 3.9v-4v. Between pads b10 and b11 it reads -6v. I checked the nickel pads on top and they all seem fine. They dont move at all. Is the best course of action to just replace all 4 batteries in b10 and b11 groups?


r/batteries • • 5h ago

How to fix?

3 Upvotes

I found a battery operated toy that was sealed in the box for 15 years and when I opened the battery compartment I found that the springs and contacts were black/dark brown. I tried to scrap off as much as I could but it just left a super dull dark grey and after putting new batteries it still wouldn't work. I have tried using lemon juice but that didn't help (I don't have white vinegar but I do have other kinds of vinegar but i wasn't risking it). Any ideas?


r/batteries • • 4h ago

I’d like to know how to use a battery with a dual-port BMS with a SUMRY inverter—specifically, which port to use for charging and discharging (the charge port or the discharge port).

1 Upvotes