r/batteries

I need lithium batteries for a project and I noticed powerbanks are cheaper than standalone batteries of the same capacity(at least that's the case where I live). So could I buy powerbanks and take the batteries out or is there something I don't know that will prevent this?

I’ve seen different explanations of how lithium-ion batteries are handled during recycling.

Some say the batteries need to be fully discharged before shredding. Others mention enclosed, low-oxygen systems that can process batteries even when some charge remains.

Is the second approach commonly used at an industrial scale? If so, what actually keeps the process safe—oxygen control, temperature monitoring, gas treatment, fire suppression, or a combination of these?

Not looking for DIY instructions. I’m just trying to understand how commercial recycling plants deal with this risk.

Hello all!

Trying to run two 48v lithium batteries with different capacities in parallel, they'll have a current draw of 20 amps with a max of 30 amps.

I'm planning on using the STPS61L60CW which is a dual pair Schottky diode with a low forward voltage and can handle 30amps.

I'm also "designing" a PCB with lugs that can handle the amperage, and with traces wide enough to handle the amp draw (11mm traces, double layer).

Is there anything I'm missing or should be considering? I'm a bit concerned about the heat from the diode, at a max of 30 amps and a forward voltage drop of .7v -- how big of a heatsink do I need to dissipate 20 watts?

PCB

Hi, everyone.
I've tried ordering a new battery for my Acer Aspire 7 A715-51G-50FF (since I can't now use it when not attached to its charger). Even though I gave them all the info I could about my pc, the online shop asked me for a photo of the old battery to be sure, but it's of course still inside and I don't think I'm fit to open the back case (if that's the name; also English is not my language, be kind). I'm too afraid to do it.
Are there other ways to know the detailed "name"/model of the current battery? I can't even see it through the battery report command because the computer can't "see" the battery anymore, it's completely gone, as if there wasn't any inside, so it gives me no info.
Please, help me!! Thank you

I bought a new battery today and threw it on my charger. I normally have 2s 5500mah lihv batteries that I use and my charger always warns me asking me if it is a lihv battery. It’s become pure habit to just accept the warning and charge the battery. I’ve been doing this for a good year. Today I bought a spectrum smart battery that is a 6s 4000mah lipo battery and didn’t even think about it not being the same voltage. I threw it on the charger as normal to start the break in process. I have just now realized that I charged it to 4.350V instead of 4.200V but it genuinely shows no sign of damage. I charged it maybe an hour or two ago. I’m currently discharging it to something safe but I’m wondering if it’s okay to still use. There was no heat, swelling, smell or obviously a fire. What should I do with it Reddit? Do I keep using it? Is it okay to use at 4.350V? Will it burn my plane to the ground?

Yesterday I bent my xiaomi 12 lite phone and suddenly it catched on fire and filled the bedroom with smoke . It took me too much time to find a way to remove the phone from the room and the fire ended itself . I stayed a good amount of time in the smoke . I found out later the smoke contains toxic metals like cobalt and manganese besides the lithium . Is it safe to stay in the room ? I have nowhere to go so last night I slept inside it

Got an sf sonic battery for my bike, in exactly 8 days the battery died! How does one claim warranty on these batteries? Their phone numbers and website only support Inverter batteries!

I have sent an email to them and got 0 reply, tagged them on X and 0 reply there too!

Any help??

This is a brand new 8 day old battery.