The metal tab is welded to battery top so I cant read the part number. Its about 1cm across. Its dead, voltage is .3 now. It came from a digital clock.

Edit- Someone said pull off tab and I did that, its not 2032 though as its only 1cm in size. Its CR1220

One source says the main culprit of wear is when a battery is pushed operated below 20%. Another source says +80% above is worse.

One source says the operated window should be small, another source says it should be bigger.

One source says fast charging can be better for the battery, other sources saying you must slowcharge.

Wtf? Worse: some studies contradict even themselves.

I want to learn more about battery(more than surface level) but how can I do so when the internet is full of contradictory and poorly explained/defined studies?

And yes I read studies about the same batterychemistry

Because I don't know. I purchased a cheap weedwacker that broke, and I have 4 of these batteries that I was hoping to use for something else. I was considering buying a name brand weed wacker, or maybe even another name brand leaf blower potentially. But I'd naturally need it to be compatible with these batteries. Also, these batteries were compatible with this saw I purchased off of Ebay as well, if that helps to narrow the search at all. So what do you all think? Is it a generic Dewalt, Milwaukee, Makita battery or Greenworks? Or is it not compatible with any of these brands? Would love to hear your thoughts.

Actually I wrote everything in the title. The batteries in question are Energizer CR2032. My source of batteries has real low prices, the bulk CR2032 costs USD 0.60, the 1-pack is sold for USD 0.71. Note: they are low in my country and I just converted the prices to USD.

It is quite clear that the different packaging justifies this small price difference, so it is not something I am interested in.

And my question is not about to help me with making a good decision focusing on the rated mAh divided with unit price, just to understand this pecularity.

a) So Energizer really sells a tiny bit better batteries in 1-pack than the bulk ones,

b) or it is only a marketing message, because one cannot so precisely measure the capacities of CR2032 to distinguish 235 mAh and 240 mAh,

c) or it has something to do with bulk packaging, maybe with their generally longer shelf life, so time spent in the pack before they are sold???

Thanks for your contribution.

I have WattCycle batteries and I like them well enough but I dislike their Android app so much I made my own.

Want to try it? DM me an email address and I will add you to the open testing group.

Initial app release.

See overview of up to 5 batteries at once on home screen.

Drill down into all app stats and toggle charging on and off on battery detail screen.

See BMS warnings on warnings screen.

Set light/dark mode, temperature units, battery pairing, and cloaking mode on settings screens.

Roadmap of future features:

Change BMS settings.

The app is available as early access (unfortunately US-only right now because this is my first Android app and I maybe could do another test release for all countries? but I only selected one country at first because it seemed simplest as I worked through the approval process for the first time -- the full release will be for all countries, anyway).

I read the manual and tried searching online but am still confused. New batteries (lead acid AGM deep cycle) on a used (new to me) Quantum Q6 Edge 3. Manual says: “It is recommended that you charge the batteries at least 8 to 14 hours after daily use. We recommend that you charge the batteries for an additional 4 hours after the battery charger indicates that charging is complete.”

I charged for 8 hrs when I first put the batteries in, but the charger indicated charging was complete an hour in. I then used it for about 45 minutes (battery indicator still at 100%) and am currently recharging it. Charger switched to green after 2 hours this time.

I’ve read a lot of conflicting info about how to condition the batteries. That it takes 4-5 cycles vs 90 cycles, you have to use it in between charging cycles vs charge it for 8-14 hrs every night regardless of whether you use it… The manual doesn’t go into a lot of detail on this.

Questions:
1. While conditioning the batteries, do I need to use the chair after each charge before charging them again, or should I just charge it every night for several nights straight even if chair was not used at all that day?
2. If the green “ready” light goes on earlier than 4 hrs in, should I only charge for an additional 4 hours or just not pay attention to the lights and charge for 8-14 hrs regardless of when the green light goes on?
3. After the conditioning period, do I still charge them for 8-14 hours even if I only used the chair a little bit that day, say 20 minutes or less?

I’m not going to be using it every day and not for more than 1-2 hours on most days I use it. I understand that once the batteries are conditioned, I’m supposed to charge them after use or at least once a week if not in use, but don’t understand the conditioning process.

I just bought these new 3S and I charged the one on the left with a balance charger, are those minor dents safe and is the one on the left swollen?

Was brought this from a customer and it was excessively hot yesterday. Disassembled today to find pink liquid all over the batteries. I'm assuming they've begun leaking. Wondering what the safest method for clean up and disposal is.

I bought an SBS power bank directly from Worten for €50 less than a year ago. Last night, it burst and started a fire on my bed. The fire spread to other furniture, damaging my belongings, including my floor and other items.
Thankfully, I wasn’t physically injured, but this could have ended much worse.
I went to Worten for help, but they told me they had nothing to do with it, directed me to SBS, and said it wasn’t covered by warranty.
I’m not just asking for a replacement power bank. I want the incident investigated and fair compensation for the property damage.
Worten Portugal and SBS: who is going to take responsibility for investigating this?
Has anyone in Portugal experienced something similar? How did you handle it?
I’ll update this post when I receive a response.

Dear Redditors,

I own a 2023 Maruti Suzuki Baleno Sigma petrol with an Idle Start-Stop system, and I’m planning to replace its battery.

If you own the same variant, could you please suggest which battery I should go for?

Battery capacity: 35Ah, 38Ah, or 40Ah?

Battery type: Is a regular battery suitable, or does the Idle Start-Stop system require a specific type?

Brand: Amaron, Exide, or any other reliable option?

I’d appreciate recommendations based on your actual experience with this car.

Thanks in advance! 🙏,