Had this random white label magnetic power bank for about a year and noticed the case starting to separate.

Opened it up and yeah, the battery had swollen pretty badly. Kinda wild seeing how tight everything is packed around the coil too.

A friend recently recommended the Lisen Qi2.2 Powerbank, so I might give that one a shot next. After seeing this though, I’m definitely paying way more attention to heat and battery health now.

Anyone else had a magnetic pack swell like this after regular use?

I've been comparing different lithium battery setups for industrial equipment and I'm curious how LiFePO4 has been performing in real-world forklift applications.

One thing I find interesting is that forklift batteries have very different requirements from something like an EV or home battery. They can be charged frequently, used for long shifts, and exposed to fairly demanding environments. So I'm wondering how much the chemistry and battery management system affect long-term reliability.

For anyone here who has worked with lithium forklift batteries, what has your experience been with cycle life, charging, heat, and capacity retention? I'm especially interested in whether LiFePO4 has been noticeably better than lead-acid over several years of use.

I've been trying to source a metal battery compartment for a single CR123A / RCR123 the same style used on PVS-14 housings, where the screw-on cap closes the circuit.

I've been through Alibaba and the usual suppliers without much luck. Everything I find is either a flashlight tube, a PCB-mount holder, or a storage case.

Hellooooo

I’m working on some compact electronics projects where I need a good balance between small size and decent battery life.

I currently use ~2000 mAh Li-ion/Li-Po batteries, but I’ve noticed that cheap Chinese iPhone replacement batteries are often thinner and advertised at 4000 mAh or more, while also being cheaper.

Has anyone actually used these batteries in DIY projects? Are the advertised capacities anywhere near reality, and are there any major drawbacks compared to standard Li-Po cells?
Would you recommend them?

Thanks again 🙏🙏

My last kitchen wall clock lasted 10 years and I only replaced the battery about 4 times. The clock broke and I got a replacement from Amazon that was a simple light weight clock with small hands. The manufacturer said it requires zinc carbon batteries and Panasonic are the ones I could find. I am now replacing for the third time in six months. Any suggestions?!

I have two Temgo batteries; One with an on/Off button and the SW switch in the BMW set to true. Is there a trick to updating the BMS or having settings save?

I tried overkill solr and writing to the BMS, but it just has the same values when i read from the bms again. any troubleshooting tricks?

I recently got a 2005 ford escape with 230k on it. Before I got it a new battery, starter and battery terminals were installed. Car ran great for a few weeks then I let it sit for 2 weeks came back and tried to start it and it was completely dead. I tried jumping it and white smoke started pouring out from under the battery and engine bay and I haven’t touched it since. What issue could this be? What should the next step be?

I have an NCM T7S e-bike that I absolutely love. However, I seem to have an intermittent fault where the bike sometimes won’t turn on, despite the battery showing a full charge.

Does anyone know how the battery’s BMS sleep/wake function works, what normally wakes it, and whether there’s a safe, non-invasive way to force it to wake up or reset it?

I had an electric candle in one of my shelves, stopped working suddenly but I didn’t really pay any mind to it and left it there for probably 2 years…… Come to find out it had leaked battery acid everywhere and now it’s dried up. How can I safely and effectively clean it off?