Batteries! (and chickums)

Careful snuggling chickens. https://abc11.com/health/salmonella-outbreak-in-48-states-blamed-on-backyard-poultry/6342916/

Jeremy P

Omg chickums an turkums uwu 😭😭

Misha Dellinger

ive only built small battery packs( about 20 ah at 3.7v) out of used laptop batteries but even the regular batteries usually come back alive after they got to 0v, so i imagine the way more stable life batteries will be fine, also be sure to measure each cells capacity and match them if you want tu run them in series, because if one is lower than the others you may start to reverse charge that cell, and thats when they die very quickly also if you want to fully charge the batteries just put the psu to 3.6v and leave until the current drops to 0, then you are basically fully charged, its also a good practise to not charge the batteries to their absolute maximum because the most damage to the cells happens in the top10% of the voltage range

József Krisztián Kovács

It shouldn't be that tedious to charge the cells individually. Just set the power supply to 3.65V. With cells that large, I'd be surprised if the current dropped very much until the cells get very close to full, but maybe I'm wrong.

Veeery good point. Thanks for the tip!

Aging Wheels

I really appreciate the update Robert! I really hope charging up the cells goes smoothly and that we can see the video of the battery pack being taken out and all of the undercarriage carnage soon.

LevyNeptune

Be extra careful with the last charge as connecting the cells in series without balance connections means that if one cell isn't behaving properly and refuses to charge, the voltage might actually never reach the point the charger will stop and it will keep overcharging the other cells until they are dead or on fire. You should buy some cheap volt meters (you can get a 5 pack of the 0.36" ones from Amazon for $10) and connect them to each cell in the series charge so you can easily keep an eye on them better than just occasionally measuring with the multimeter.