Avoiding heartache.

[jonr3]

Originally Posted by 808PantsII

Thanks Jon. Sounds like you've been there and done (more of) that.

On that subject: I'm in Honolulu, and shipping from the US mainland is NOT cheap, not even ocean freight. And this is the case even for non-haz stuff; not sure what happens when it's a Lithium pack...but I'm guessing it's not going to be CHEAPER. So while I'm not anxious to incur the wrath of "support-forum-sponsor" police, I want to consider Chinese manufacturers. It's not just a LITTLE less costly; it's looking to me like it's probably less than half the cost for same or similar specs (a basic 48V/72ah box ready to bolt in, delivered to my door, duty paid, etc. (Air freight is about $250, which seems entirely reasonable.) I'll attach specs.

Is it possible to appraise the quality of the BMS, etc from these specs? I'm under the impression that a high-quality BMS will sense individual cell voltages vs the pack voltages, to determine whether any is high or low - or maybe this is basic and universal at this point? - but I don't see that level of detail in the attached specs.

EDIT: mfr just provided the attached BMS monitoring screenshot, which reassures me that it does indeed monitor individual cells.

Mahalo... Dave

Hey Dave, I think all of the lithium batteries for golf carts are made in China - at least the enclosures all pretty much look the same. And I've used a Daly BMS and an AMT BMS - both of which allowed Bluetooth connection and current status of each cell.