ninjette.org - View Single Post - Squid Repli-Racer 250 build

DannoXYZ · December 2nd, 2019, 03:38 PM

Note that Antigravity "small case" batteries only have BMS circuitry for balance-charging. They do NOT have overcharge and over-discharge protection! Overcharging can be handled by factory VRM/RR. Measure output and verify RR doesn't output more than 15.5v.

Over-discharge protection must be manually done. DO NOT leave bike with lights on and engine not running. Such as using kill-switch instead of ignition-switch. ALWAYS use ignition-switch to turn OFF to prevent ever leaving lights on. This can deeply discharge small battery within minutes and destroy it (even lead-acid batteries).

A LOT of small lithium batteries in market are configured like this, so care must be taken with their charging and discharging to prevent damage.

December 2nd, 2019, 03:38 PM	#43
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Note that Antigravity "small case" batteries only have BMS circuitry for balance-charging. They do NOT have overcharge and over-discharge protection! Overcharging can be handled by factory VRM/RR. Measure output and verify RR doesn't output more than 15.5v. Over-discharge protection must be manually done. DO NOT leave bike with lights on and engine not running. Such as using kill-switch instead of ignition-switch. ALWAYS use ignition-switch to turn OFF to prevent ever leaving lights on. This can deeply discharge small battery within minutes and destroy it (even lead-acid batteries). A LOT of small lithium batteries in market are configured like this, so care must be taken with their charging and discharging to prevent damage. Last futzed with by DannoXYZ; December 3rd, 2019 at 11:58 AM.