You can buy cylindrical cans with posts for easy assembly. Headway had them but those were bulky and heavy.

You can buy cylindrical cans with tabs already spot welded on them, NKON where you can easily solder wire with drastically reduced heat thennon spot welded cans.

Lots of people buy tool batteries and use them in stock form with stock chargers. Like the Ego 52V packs for lawn mowers.

Others buy tool batteries and open them up, ditch the circuit board and solder wire onto the tabs to make the pack they want. Like the Makita 5S2P, good for 36V or 72V

Others throw the dice on mystery bag on Alibaba/Aliexpress/Ebay/Amazon

The smart ones with pockets of cash, buy their batteries from reputable battery sellers.

The dinosaur ones use Lead Acid, like golf cart batteries are 12V 250Ah but weight a ton, lots of dino sizes to chose from. You lose about 25-30% Ah just for the fact their lead acid. Other factors come into play to.

Others use Lipo batteries, like from Hobbyking which have a dud rate of 15% or so.

Some have lots of time on their hands and would like to save a few bucks so they build their own packs from cans. Some solder directly onto the can, others use home made spot tab welder, others buy a welder.

Many ways to do it.

For more five power energyinformation, please contact us. We will provide professional answers.