alex87 Posted July 14, 2017 Share Posted July 14, 2017 hi to all, my first post, my first EUC....... and i bought from amazon ITALY a ninebot S2. why the s2? because i read that it has 2 batteries under 160w and i COULD bring it on a plane...... and because i APPRECIATE external batteries instead of built in. As a flashlight enthusiast.. and everything about batteries etc, i find that one person could build by itself a batetry pack, am i wrong? THis model should use 2x batteries and each one should be of 15 x18650 batteries. right? i also supose that the FINAL CONFIGURATION should a 15s2p battery ( both packs) so it should be relatively safe, i read that the voltage is 54,3 (medium voltage nominal) so i can think it is 54,3 / 15 batteries = 3,62v that's the CLASSIC VOLTAGE of a 18650 lithium in fact the WALL CHARGER is rated for 63volt...........so it can charge 15series of 18650. My idea would be to use 4x of these holders (of course minus 1 battery to be 15 of total) and buymyself 15x 18650 batteries , the connection cables should not be a problem i think, but my only one CONCERN, is how to CALIBRATE 15 batteries!!! i know that there are balance cables but i know they reach at max 8x batetries in series, and there are hobby chargers that can handle up to 6x balanced batteries in series. So could someone say me how is made the charging cirtuit of a EUC ?? how could it properly balance 15 batteries in series ? maybe... he uses 5x 3 blocks of cells to be balanced.. i don't know. or maybe..............they NEVER BALANCE THE ENTIRE PACK.... but doing so the overall life of it will decrease over time..... Quote Link to comment Share on other sites More sharing options...
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