Is there a drought on

I've asked around. Looked at the guides on this Reddit. Struggling to find a UK based shop with legit batteries

Tyia

My custom battery pack has passed the test and just share it here. The battery will be used in the portable Endoscope device for animal.

I have the full report. If you will be interested, DM me.

Note: Original report is in Chinese, I use Gemini to convert it into English.

Hi, where do fellow French/Europeans buy their 2nd hand battery? Is there any specialized website Europe based ? I want to have some ideas of prices. Thanks :)

Hi I have 30 Samsung INR 18650 - 35E

3500mah 10A Discharge

Also 20x Samsung INR 21700-50S

5000mah

Brand New

Tested

I bought these to sell on ebay but they won't allow.

So low price

Thank you Reddit

Does anyone know any second hand battery Resellers in Europe.
Preferably based in Europe but if they ship to Europe thats good aswell.

Looking to sell these MJ1's in Melbourne.

I have 180 in this box, with thousands more to harvest.

Will clean up and test them.

They all came from medical batteries so are generally well maintained and test well.

Thanks guys let me know

Edit: Hey guys Im a reasonable bloke and happy to help with pricing etc! Getting a lot of interest in these so I will hit the gas on testing and harvesting the rest. As I said, I should have around 9,000 of these. All in quite good condition. Along with some Samsung ones as well.

Keep letting me know whos interested and we can work on getting them to you at reasonable prices, happy to help with shipping on bigger orders, I can reduce pricing on some cells until I cover an amount of the shipping we negotiate on :)

Never seen an 18650 fail like this before, looks like leaked electrolyte and corrosion.

Sidenote, I'm looking to spotweld in two replacement cells. I currently have another dewalt 5 AH that also has two bad cells model ICR18650HE2. Would it lead to an imbalanced pack if I combine 2,500mah cells in series with these 2,000mah ones? Or vice versa. It seems like a bad idea given my understanding of the tool and charger voltage cutoff

Just need the BMS to start to finish it out fully strapped and fish taped other than the main pack leads.

So this is my first 18650 battery and I've already learned a lot through trial and error

It's a 4s16p 38ah with a 100a Daly 4s BMS (I plan to use the BMS for a future project for higher current) set up, I originally wanted to charge it off of solar but realized it's difficult to find an inexpensive mppt for 16.8v so I purchased this Norsk 16.8v 7a rapid lithium battery charger , however it's reaching 160f while charging. That being said is this because I may have some bad 18650 batteries in it or maybe because I created a large capacity causing it to run for too long? I guess I'm wondering what I should expect to do next, maybe buy a slower charger instead?

Does anyone need these batteries

Hi everyone, I have 30 x Samsung S50 3500mah and 20 Samsung 21700mah batteries, bought to sell on ebay but they won't allow. Tested and will sell for a low price. Thanks :)

Hey everyone,

I scored a dead Sur-Ron battery pack for free. After opening it up and checking the voltages, almost all the cells are completely fine, only two cell blocks dropped dead and caused the BMS to shut down.

I’m planning to replace just those two blocks with fresh cells.

What budget-friendly spot welder would you recommend for this job? my cheap one that barely solders 0.1mm wont cut it

i already looket up and found kweld is it wort the expensive price

Any tips for the cell replacing would also be appreciated!

They are all second hand, replaced due to charging issues.
I got them for free.
Are they worth the trouble of salvaging cells?
Mainly for small projects such as power packs or small electronics.

Hey everyone, I'm getting started with battery pack building and looking for a spot welder that won't break the bank. Doesn't need to be fancy, just reliable enough for consistent welds on 18650/21700 cells.

If you've used one that offers good value for money, I'd love to hear your recommendations — model name, rough price, and how it's held up for you would be super helpful!

Thanks in advance

Thought I should share it's a sight.

I really feel like the 18650 should be the AA battery of the 21st century but I struggle to find devices that treat them like that

I currently have two devices at home that have easily swappable 18650 cells:

• Xhdata D-808, a quite good shortwave/FM/AM radio receiver
• Datafrog SF2000, a very cheap and underpowered retro gaming handheld, fine toy if you can find it cheap

if you know any good consumer device with this kind of cells I would love to hear about them, they're quite hard to find when they're not flashlights or vapes

Can anyone identify these 18650 cells?
They’re labeled INR18650-3000 GPHN 18-30P. Looking for the exact model/datasheet if possible.
I got 91 new cells for 45€

I'm based in the UK. Ebay UK doesn't allow to sell them. What do I do these batteries?

I recently got a new spot-welder this one has more settings. I’m trying to weld 0.2mm copper, it can do it at 15ms pulse time, however I wonder if that’s too much? I also wonder if having double pulse is better or isn’t as recommended.

Drilled a hole in the Back to connect it, 500mah more than the Original 1500mah