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$5 buys me 2m of 0.12 or 0.15mm strips and will do +5 packs rather than just one. Doing 2 layers makes it 0.24 or 0.30mm thick. Using 2x 0.12/015 strips allows me to use a cheap welder so no need to upgrade.

Them failing isn't really a fault. Almost all I repair aren't broken, they are low capacity through use. With tool packs this is usually a symptom of being charged and discharged at high amps, often. All the big brands use decent quality cells, from other big brands.

@@neilcromwell8737 they are fine to use any capacity cell that has a discharge rating of 15a or higher.

I'd replace with larger 2, 2.5, or 3 if budget allows if this is just for 5 cells. Check for discharge values. 20A discharge means you can use as before. If you go with less, that battery may overheat and if you're lucky - shut down, if unlucky, combust. If you insist on less discharge rate, the battery is consigned to light duty. Any tool that requires little power. Illumination, USB battery charging, drills or saws are heavier duty.

@@neilcromwell8737 that particular model has a 15a fuse, so any cell that can provide 15a or more current will be fine.

Make sure you don't use it after you torch the weed

@@user-qr5zk2xf1h it wasn't replaced.

@@fwd9609 to do this use an 18650 charger. I have wire off the (+) and (-) on the charger with mini crocodile clips on the end. This can be used to charge each set of cells, one set at a time.

@@spinnanz thanks mate appreciate the reply. I’m considering buying an IMAX b6ac charger and will follow your advice with that. With the 18650 cells being in parallel and series does this affect what charging option to select? 1S or 2S when attempting to charge a pair that have dropped below voltage. Have you used any of the PCB battery balancers? And balanced in this method before? Cheers

@@qt1qg do you have the battery model number?

@@spinnanz I don't have a model number, but name in the online store is ProCORE18V 8.0Ah Professional. I just want to know if I am going to be perpetually scammed in buying overpriced batteries if I buy new Bosch products.

@@spinnanz I don't have a model number, but it is called ProCORE18V 8.0Ah Professional. I just want to know whether or not i will be reliant on overpriced batteries if I buy new Bosch products.

@@qt1qg I'm not sure if they lock or not but I see there are aftermarket cases and bms available so if they lock, you'd just replace the BMS too.

@@spinnanz so the tool does not reject non-OEM BMS, or at least someone find a way around if it does. Thank you

it was 0.12 . I recommend going and adding a 2nd layer, to make it total 0.24mm

In the event the strips get hot it stops them melting the top insulation of the cells on the (+) end.

Tool packs are def the best type of battery to learn on!

Only if you're in New Zealand!

The factory 4ah packs have Samsung 20r cells with a rated discharge of 22a, the 5ah uses 25s cells with a rated discharge of 20a. You would be safe to use any brand cell with a max discharge rating of 20a or above.

@@spinnanz thank you.

With no cell under the strips to dissipate heat, a too long weld time can cause the welder tips to burn right through the strips. The actual weld time for any welds will depend on the welder. 45 on one may be 35 or 50 on another etc. Better spot welders also adjust the actual joules at the probes, rather than just the weld time, which is how this and other cheap welders use to adjust welds.

15x 4000mah 21700 cells.

These were re-wrapped 30q cells, so upgraded to 6ah but a slight loss of max current. The BMS works with all.

It is easy after doing heaps!

Genuine 5ah costs $279 here. Cost to repack with new Samsung 25R costs $99.

When you scratch it, it's copper under the nickel plating.

I'd 1st check the button, that can become faulty with time.

Glad the video helped!

He gives the milliseconds settings as he speaks. He mentions it earlier than when he makes the adjustments, I think it was 45 Ms for the batteries and 25 Ms for the bridging strips with the insulation cardboard underneath. The reason he mentions is the heat needed for the battery welds is too hot for the nickel to nickel strips. Watch it again and let me know if I led you astray. I will run out and buy this spot welder in the meantime. Good luck.

Two layers of 0.12 or 0.15.to make a total of 0.24 or 0.30mm.

No idea sorry. All snap on packs that I've done were not locked after repacking.

It's a generic red "mini spot welder" on Ali express. Depending on the exact model you get, it may need modding to be reliable.

@@spinnanz found it on ebay for $25 thank you

On some of the replacement bms they say if you don’t have a charger when replacing bms (aka the chip in the pack ) if you short pins 2 & 5 on the main pins …it will activate the electronics

Factory

@@spinnanz Thank you. Just bought one myself, not ridden it yet. It’s sounds amazing for the factory exhaust.

@@AidanHPark they are nice to ride, especially with that sound. Apart from the suspension, they are far better to any modern 400.