I re-called this old Ericsson CF388 phone battery. It worked great, until it came time to charge. It said it was fully charged within minutes. Unplugged it, and obviously it’s dead. It can’t seem to charge no matter what I do. Old and new cells both NiMH and similar capacity. What can I do?1yr ⋅ 15pmm01 ⋅ r/batteries
Using some scrap 14-2 to bring this AGM back to life on a 2 AMP trickle... is this dangerous? All batteries are 12V1yr ⋅ shcam_likely ⋅ r/batteries
I'm making a battery replacement pass through that allows the phone to run off the wall or a power bank why don't it work ?2yr ⋅ therobitsayvour ⋅ r/batteries
Follow up/more help with discharged LiFePO4 batteries. 24v 280Ah batery recovery. Info in comments3yr ⋅ gpbonaca ⋅ r/batteries
Found this old battery charger and I wonder if it is usable with modern batteries. Especially with enloop 2500 mah. What stats should I look in batteries to be compatible with a charger? Thank you1yr ⋅ Kalessin_S ⋅ r/batteries
Need help finding replacement battery. Lipo 3.7v 320 mah 3 wire for watch.2yr ⋅ Orangecrushgamer ⋅ r/batteries
Does anyone know what kind of batteries these are/if they are available at grocery stores?3yr ⋅ OMGitsCoreyM ⋅ r/batteries
looking for alternatives/upgrades to this size and style of battery, I have two of these wired together, running a large hid spotlight that I built several years back. seems like I have to replace these batteries every 2 to 4 months. any lithium options? any better options? thanks2yr ⋅ 96Impalaguy ⋅ r/batteries
Has anyone else had this issue? about a year into using my diy 18650 pack I noticed the holders started to split. Voltages are all fine, just made me nervous.2yr ⋅ Full_boost_dude ⋅ r/batteries
Trying to find this battery from a digital camera — anyone have any ideas?3yr ⋅ EatonSphun ⋅ r/batteries
Does anybody know why doesn’t it let me use my 3,7V power supply instead of this battery4yr ⋅ XRoyageX ⋅ r/batteries
I'm trying to charge this battery with this charger. It isn't going well and I don't understand. [details in comment]2yr ⋅ JimmyMJB2 ⋅ r/batteries
I bent my battery *ever* so slightly when replacing my Nintendo Switch joysticks (damn you, joycon drift!!!) Is it still safe to use or do I have to order a replacement battery as well ಥ_ಥ4yr ⋅ aquestionablewhat ⋅ r/batteries
I am stepping into the exciting world of battery building. I just ordered the kweld spot welder. The kweld website recommended Turney nano tech lipo 5000mah to power the kweld. I couldn't find much information on how to charge the battery though. Will this Imax b6 do the trick?3yr ⋅ ip33dnurbutt ⋅ r/batteries
Hello everyone! I had this old Anker 26800mAh powerbank and the charging port was damaged so I was unable to charge the bank. It's been sitting empty in my closet for more than two years now and today I cracked it open and found 8 of these 18650 batteries. Now my question is are these still usable?3yr ⋅ Sendosi ⋅ r/batteries
The charger is a nitecore sc2 and Duracell AAA recharable batteries. What voltage should I charge these AAA bats at? Because the charger automatically selects 4.2V @ 0.5 A. Aren’t they supposed to charge at 1.2v?2yr ⋅ Dchemist909 ⋅ r/batteries
If i somehow step it down to 5 volts what would the mAh would be? would it be a good idea to build a powebank from these guys?1yr ⋅ shn29 ⋅ r/batteries
Would it be safe to connect these batteries in series to power a 3v device that draws 9mA?2yr ⋅ mydudeisfri1112 ⋅ r/batteries
Looking for the cheapest ( good obviously ) to run my Digital Piano on. This is just for voltage and not looking to run it on a ups for long. Just enough to turn off the piano safely. I thought I saw a APC 75W2yr ⋅ normankbplayer ⋅ r/batteries
Why is this 24V battery bank going out of balance? Details in comments.1yr ⋅ manbastian ⋅ r/batteries
I have got a tiny tiny scratch on the wrapper of this 18650 (Unprot.) - is that problem? I hear the wrapping is quite imporant..!3yr ⋅ Jackop195 ⋅ r/batteries
Need some help with an e-moto... it is 72v30ah... I want to make a 24v30ah boost pack... my goal is a temporary boost to 96v30ah... can I splice the positives and negatives? I’m hoping it adds voltage, not ah... I drew a little picture. I do not know how to draw proper schematics1yr ⋅ Tight_Artist1598 ⋅ r/batteries
How can I find out more information about this cell? I know it's capacity but that's about it. It was taken out of a 25W vape.2yr ⋅ Daffy1234 ⋅ r/batteries
How do I remove the tabs from salvaged LG 18650 batteries without this happening?2yr ⋅ spectre3388 ⋅ r/batteries
What would a rough cost be of a battery bank this large? And what type of cells would most likely be used?2yr ⋅ Shadow6751 ⋅ r/batteries
No issues starting truck, but CCAs are way down according to test by mechanic. Replace?2yr ⋅ Tie_Good_Flies ⋅ r/batteries
Do these settings on the charge controller look good for my 36v LifePo4 battery?3yr ⋅ NSR_Nate ⋅ r/batteries
XTAR DRAGON option to discharge the batteries without charging them after ???? i wanna build a battery pack with discharged batteries not charged, i seriously cant find a way only to discharge the battery, 60€ product, am i thinking wrong ?1yr ⋅ _yaix ⋅ r/batteries
I suspect I have a dead or dying cell in this Dyson battery pack. Any chance of recovering the other batteries?4yr ⋅ GCUArrestdDevelopmnt ⋅ r/batteries
CR2032 exploded in our “junk” drawer - any preconditions to cleaning it up?4yr ⋅ jeremyiglehart ⋅ r/batteries
Is this when batteries become hazardous to our senses? (touch, smell, etc.)1yr ⋅ 17vopk ⋅ r/batteries
Can anyone help me find a datasheet for this? The only text I see is GPC 8047105, a manufacturing date, voltage (3.7v), and watt hours. I've been coming up blank in my search.3yr ⋅ Wibblium ⋅ r/batteries
Does anybody know what kind of battery this is? The red wire is connected to the circle hole and the black wire is connected to the square hole. Also are chargers and replacement batteries easy to come by?3yr ⋅ Cuck-fil-a ⋅ r/batteries
Anyone have any thoughts on this? Gen 1 Nissan Leaf cells bulging measuring 0.00 volts...3yr ⋅ Filetmingo ⋅ r/batteries
Can't find a 24-28V battery charger for my Li-Ion battery. Can anyone help?1yr ⋅ Devo2017 ⋅ r/batteries
Lezyne 18650: Can I use any 18650 (e.g. Murata VTC5A) to power my bike lamp?3yr ⋅ biciklanto ⋅ r/batteries
Anyone able to tell what kind of battery this needs? Nothing printed on it4yr ⋅ Lyndsaypickering ⋅ r/batteries
Made a new gadget for camping next weekend. 13 - 1.2v batteries in series to run 12 volt items, don’t be alarmed it will be fused. Bonus is I can swap out the batteries for fully charged rechargeables. What could go wrong, question will it power an inverter!?2yr ⋅ DicksMyName ⋅ r/batteries
Where can I find a good replacement for this? It stopped charging and it won't turn on my lightsaber so I think it completely died.2yr ⋅ SonicTheDog420 ⋅ r/batteries
i have this 1cell 18650 rechargable fan. I checked and I can fit up to 4 18650 but it needs to be in parallel and need bms though charging time will be very slow. I don't see any bms 4s for 3.7v, what to do? pls help!2yr ⋅ myusernameistakened ⋅ r/batteries
Will this battery deliver enough current for spot welding with 0.2mm nickel strip on to 26650 cells?4yr ⋅ NSR_Nate ⋅ r/batteries
Best way to charge Flooded Nicd Cells? (These are MarathonNorco NiCd aircraft cells. And *yes*, they still hold a decent charge despite their age)4yr ⋅ Faulkives ⋅ r/batteries
Salvaged a 7.4V rechargeable battery. One side is puffed up a bit. Is it safe to charge? And if it is, what voltage can I charge it to, is it even possible to say? Thanks4yr ⋅ alchum ⋅ r/batteries
Would a lithium battery on the back of my head be safe or should I be concerned with something being emitted? Or is it just plain dangerous because if its damaged it could burn me?3yr ⋅ cannonk414 ⋅ r/batteries
Wow we have come a long way! This is maybe 10 years old, but look, it’s only 170 mAh!3yr ⋅ enzodr ⋅ r/batteries
What are the empty slots in this e bike battery and can I fill them to increase the power?2yr ⋅ parttimeamerican ⋅ r/batteries
How can I know the capacity of this battery? And whether it's li-ion or LiPo?4yr ⋅ JFs743 ⋅ r/batteries
Did I do this right? It’s a 48v 18650 13s6p cell, but no wire leads for balancing. Are they built in to the board of this particular BMS?2yr ⋅ Entrepwneur061 ⋅ r/batteries
Been stacking Li-Ion for a few years now. I mostly buy the colorful USB-packaged 18650s. How large is your battery collection?4yr ⋅ outrun64KB ⋅ r/batteries
Dented my newly purchased S10 battery while performing a repair. Is this still safe to use(Please say yes)?2yr ⋅ __SaladASS__ ⋅ r/batteries
Is this AA definitely rechargeable? This is the ONLY labeling on the battery.5yr ⋅ sandwiched ⋅ r/batteries
What are these cells? Only printing on them is Y121230, google gives me nothing..4yr ⋅ Sinner_NL_ ⋅ r/batteries
What kind of charger do I need for this battery it's been dead for a while now and I need it charged.2yr ⋅ dark6678 ⋅ r/batteries
These appear to be 3.2v Lithium Ion batteries, but in the form factor similar to a capacitor. What’s the benefit of these, and where can I find more of them?4yr ⋅ Speedy-McLeadfoot ⋅ r/batteries
Hi all! how long (and how) should I recharge my eneloops Pro for good life? I have the charger in pic. thanks for your help!2yr ⋅ ltpitt ⋅ r/batteries
Need some Recommendations. I need to replace these batteries and was hoping to upgrade. I was told I could because of those plastic spacers. Any recommendations for a Lithium ion that charges well and can handle a 5000 lumen Flashlight3yr ⋅ shinobifujin ⋅ r/batteries
How do I fix this battery? Don't think I can get a soldering into these spaces to fix the bad connections3yr ⋅ JayAlan215 ⋅ r/batteries
Could do with advice for a modern equivalent - received an Old family lighter (circa 1965) but need a new battery - this one is square and relatively small. Advice would be appreciated.2yr ⋅ Hungry_Reputation_62 ⋅ r/batteries
Would never recommend these rechargeable batteries. They worked fine for a month or two but now no matter how long they are charged they die within a minute3yr ⋅ YumYum-my-cat ⋅ r/batteries
It refuses to charge, I've tried putting it on an outlet and an extender. Is there a way to get it to work4yr ⋅ SteeledProduct ⋅ r/batteries
Trying to find a replacement battery for this hoverboard battery.2yr ⋅ TRIpowpowUnownow ⋅ r/batteries
Where can I buy a similar battery to this one that has a higher capacity? I’ve tried looking up the numbers printed on it4yr ⋅ daftpunk34 ⋅ r/batteries
What is the best route for rebuilding this thinkpad battery pack? Im mostly wondering what cells to buy.2yr ⋅ _PACO_THE_TACO_ ⋅ r/batteries
Accidentally sliced through 1st layer of coating on the outside of a lithium battery while taking apart my computer. Is this dangerous?4yr ⋅ superduperkylee ⋅ r/batteries
I bought this laser and was wondering what size battery it takes...AA for reference.3yr ⋅ Anders-94 ⋅ r/batteries
My headphones won't turn on unless they are plugged in, so I thought I would see if I could replace the battery. Is that possible?6yr ⋅ smbdysm1 ⋅ r/batteries
This is a 12s 4p battery pack I designed, Is it possible tp fold it in half and connect the two 4p cells with a horizontal strip as shown below. Any tips and correcting in my design is appreciated thanks so much.4yr ⋅ JAIDXB ⋅ r/batteries
Please help me! Batterie lid is stuck bc acid leaked. Any ideas to get rid of it?4yr ⋅ 1_crazy_dude ⋅ r/batteries
Duracell batteries shown leaking in the original unopened package5yr ⋅ philosophers_groove ⋅ r/batteries
Yikes, after more than two years in a storage unit? Crazy battery lifetime... How is this possible? 96% bat on old Sony Xperia4yr ⋅ PafuriZA ⋅ r/batteries
Received battery + panel for christmas, these are the connections for the solar panel, what are they?4yr ⋅ yodelyfish ⋅ r/batteries
What 3.7v battery can I safely replace my Pokemon Gotcha device battery with so I can still charge through the device?4yr ⋅ MCMickMcMax ⋅ r/batteries
New battery day! 72V 29.5Ah - 200 LG HG2 18650 cells - 20s10p - The last component needed for my Electric Enduro Bike!5yr ⋅ RZRSHARP519 ⋅ r/batteries
These batteries have grown in size (I think) since charging them, is that bad?4yr ⋅ bourbine ⋅ r/batteries
What are these battery leads, and how can I charge the battery directly from them?4yr ⋅ SunRaSquarePants ⋅ r/batteries
Help identifying this old Sonicare 3.6/7V “Li-Ion 10 battery” type and an appropriate external charger to reuse it somewhere else.4yr ⋅ acadiel ⋅ r/batteries
I need a Sanyo UR18650ZY 2600mAh 3.7V battery but can’t find any in the uk for a decent price any alternative batteries I can use?(Its going to be used in a cordless clipper)3yr ⋅ xRedbird56 ⋅ r/batteries
Looking for a Master/Slave Li-ion BMS for 16S (4 slaves, each for 4S), 60 A3yr ⋅ 1Davide ⋅ r/batteries
Homemade massive rechargeable battery. Output is 1.2 v 1.25 amps. (I know it looks like a bomb)6yr ⋅ GuardedDig2 ⋅ r/batteries
Need extra batteries for kids ride-on toy. Get 40 minutes use per charge. Buy battery with compatible connector or rewire with more common connectors and use generic battery? Single battery or in series? Battery recommendations?4yr ⋅ downeydigs ⋅ r/batteries
Can anyone help identify this battery? Came out of a Skullcandy air raid speaker, looking to replace it3yr ⋅ alexg6515 ⋅ r/batteries
That was lying in a shelf of my classroom for about four months now. I asked my teachers what this is, one of them wanted to convince me that it is a f***ing shotgun cartridge. One of my classmates thinks this is a battery or something. Does anyone know what this thing on the picture is? Thank you4yr ⋅ R4z3rf4c3 ⋅ r/batteries
Is there any way for a man with no welding/soldering equipment or experience to reattach the nickel strip to the lithium ion battery. I must bring light to the darkness once again!4yr ⋅ CRAPtain__Hook ⋅ r/batteries
4s 14.8V charger, but it has a 5 pin adapter for my 4 pin, will it work, if so which pin do I ignore?3yr ⋅ OMGpigeons ⋅ r/batteries
My dog got hold of a couple batteries in a bag, he chewed off some of the outer layer but the metal under it seems to be fine. Is there any danger and what does a punctured battery look like (for comparison)?4yr ⋅ _Steamed_Potato_ ⋅ r/batteries
I saw a video on YouTube using a battery like this and an inverter to power stuff when there is no power but I have no idea on how do I charge this battery3yr ⋅ Youraveragebread ⋅ r/batteries
Found this Duracell D battery downstairs - valid till Dec. 2023, has a dent/scratch in it. Is this still safe to use?4yr ⋅ DMSPKSP ⋅ r/batteries
Will this design work for a 12 v lithium battery. Each cell is 3.2v. I designed it based off of a jehugarcia video linked in the comments. This is my first time building a battery pack btw.5yr ⋅ NSR_Nate ⋅ r/batteries
Need to identify these gold bits so I can fix my Wii remote charger. Any idea what these things are called?4yr ⋅ 36monsters ⋅ r/batteries
I disassembled some Laptop Batteries what are some things I could build with them? I have never done anything similar, any advice would be appreciated.5yr ⋅ Bllq21 ⋅ r/batteries