My friend bought one of the EM3Ev packs from here in Nanaimo British Columbia Canada, and it arrived safe and sound in about 3 weeks. Its 14S7P. The BMS app works nicely on his phone via Bluetooth, albeit a wee bit primitive. Getting insight into the exact millivoltage of each of the 14 cell groups is super useful, as well as the overall pack voltage. All the groups were within 5 millivolts of each other at the 90% charge state. According to their web site it balances at the 90% level which is super nice, as it means he very rarely needs 100%, and doesn't have to worry about the balance-state so much as I - I have an earlier edition of the EM3EV packs. I also like the on-off switch on the pack and the LEDS on the outside of the pack which gives a rough indication of charge state, as well as whether there is any power on the XT90s output. Nice to shut the bike off with the pack still attached, as many cheap China controllers have no on-off switch. These are super nice packs, and match the specs for weight mentioned on the web site. My friend cut 10 pounds over his old BMSBattery LiFPO4 15Ahr pack, and picked up an additional 10Ahr. The pack was around 1100Cdn, to his door. Since most of his riding is in the top half of the pack, the average voltage is well north of the 53.8V full charge of the old LiFP04 pack. All in all a great upgrade, and very satisfied so far. You can buy XT90s spark arresting pigtails, pre-soldered from Luna, if you need some more for things like inline DCDC converters, or CA shunts and the like. Its matched to a 9C front hubbie, and probably is under 1C on the biggest of hills around Nanaimo - he mostly runs at under 200 watts most of the time - maybe he spikes to 30ish amps on a big hill.
