Fixing a Battery in my Electric Skateboard | Meepo Mini 2 ER

[@ericrisp]

I highly recommend cloud wheels, they are a game changer. Nice work on the fix!

[@tomallo99]

Nice job fixing that! If I can chime in, what usually happens is that with time and repeated charging cycles small differences in voltage across the cells get amplified, and eventually they come out of balance; unfortunately some cheaper/older devices don't have a smart/monitoring BMS which has active cell balancing, which would prevent that from happening. On the board that you installed with the batteries, did you notice a row of small resistors? If the so called "bleed resistors" are present, it's good to leave it plugged in for a few hours even after the charging indicator shows that it's done (not necessarily always, can be every few cycles) This way, when the first cells reach around 4.25v, the resistors start slowly discharging them, and allow the less charged ones to 'catch up' - that's called passive cell balancing, the more basic and rudimentary way of dealing with this issue.

[@UsatMVS]

Awesome! I didn't know about bleed resistors. Thank you for sharing that :)

[@ADRdaniel]

It sounds like this skateboard needs a cell balancing charger. Make sure your tack welds on the pack have good penetration and maintain a stiff pressure "head pressure" on the tab when plusing the welder. E-bikes and electric skateboards are high-vibration usages. I learned the hard way refurbishing my lithium-ion drill packs. If the battery case premits the space for it I recommend some thin high weight polyurethane foam to pad the pack from vibrations against the case.

[@UsatMVS]

Thanks, I will add some foam cushion to dampen the vibrations

[@veymaxboard]

hey, do you have an email?

[@UsatMVS]

Shoot me a DM on Instagram @UsatMVS

[@ada5628]

Nice job!