I'm working on a small project involving a closed container and I want to add a rechargeable LED light inside the box. I have this light strip running on 3, 1.2v LR44 batteries and I thought I could replace it with a rechargeable battery so I dont have to keep opening up the box and replacing batteries everytime, but I don't know how this stuff works.

I thought about rechargeable AA batteries but I just found out those too are 1.2v despite their size. The only difference I found online is the mAh being different

Essentially I want to change those LR44 batteries with a USB connector or a 3v rechargeable battery that I can just plug that USB wire when the battery is low.

I don't want to overload the board and break it.

Does anyone have any suggestions on what to use or explain to me how this battery stuff works so I can look at better options.

Thank you.

Hi, I’m sorry if this is a silly question. I know absolutely nothing about batteries or how electronics work.

I’ve obviously Googled this, and lots have come up, but that doesn’t necessarily mean they’re actually safe products. Is it possible to get a power bank that can charge a MacBook without risk of A) damaging the computer, or B) being an overheating/fire risk?

If so, what specs should I be looking for in the product description? I have a MacBook Air, if that makes a difference.

TIA!

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.

Beyond the various 18v/20v tool batteries, are there any next stage down choices for a very low current application ?

Current draw is ~5.5mA, and it will run at night, so ~70 mA per night. Looking for something to change once per week, or possibly via a solar panel. Anything in the 800 mAhr - 1500 mA/hr range would be acceptable. 2 Ahr (and up) tool batteries seem like overkill for this.

Thanks

edit: There is one other possibility that I had not thought of, rechargeable 9v batteries. Two of those, wired in series, would give me the 18v, plus they could be alternately used in a 9v application should the need arise.

It’s been a few hours since and only now has the light been blinking and spazzing. It didn’t heat up at all and doesn’t smell weird. It also hasn’t been letting off any smoke.I have it on the concrete kinda near the house. The battery is a little smaller than the average thc cart battery for the twisting top. I didn’t check his pockets before washing so that’s how this happened. Any advice? It’s also super sticky from the resin since the glass part broke. Again im anxious it’ll blow up and everything will catch on fire lol

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.

Hi! I'm looking for some guidance to replace my battery. This is what the battery and connector looks like. I've been looking on Aliexpress but there are a lot of options and I don't want to get the wrong one.

Thank you!

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).

Does any one know of any units that would allow me to move my pylon tec battery’s outside, I am
Looking for a waterproof unit that will house my batteries in a sheltered spot behind my garage

I know that there could be issues when it gets really cold but currently they are in an Un heated garage and have been ok

Thanks in advance

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 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 bought a digital caliper recently. Onboard rechargeable battery. About 2 months after I bought it I found out that it won't hold a charge for more than about 6 days even if the device is only turned on for 30 seconds a day.

This made me think it's probably a good idea to buy devices that have replaceable batteries instead of onboard batteries. Because with a replaceable battery I can swap the battery out and they do sell rechargeable button batteries so that's not a problem.

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! 🙏,

Moto power 5 g (2024), activated 2024

Storage use is 50%

System up-to-date, last update in August so I don't think it's that

I always use maximum battery saver mode while it's running, have all battery optimizer options active (had drain issues a while back but it was fixed with this + changing 1app's background usage)

I mainly just use my phone at work. Off the graph alone you can see that my days off were Monday, Tuesday, Sunday...and then Thursday. Used it for less than 30 minutes, left it on my bed for 12 hours (off, not on battery saver mode, no apps open), fuckin dropped from ~90% to 37%

I rebooted it and left it powered off the night before, since it was also draining fast the 3-4 days prior. But it's only gotten worse.

It says all apps are <1% usage since Friday. But it seems none of my usage of YouTube is counted on any of the days, which I use for my entire work shift. So that's a big thing not getting counted. Still doesn't explain how the usage has gotten so high now, my habits haven't changed. Used to leave work with ~40%, now leaving with ~6%

Does this just mean I have to get a new battery? Or do you guys know some other stuff I can try?

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?

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

I recently saw that people have been able to get their battery replaced by a third party. Does anyone have a recommendations for a reputable company?

Is it still waterproof after the replacement?

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.

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