OW+ Stage 1 replacement battery system - 1.7X more range

70% more range over the stock Onewheel plus battery - drop in replacement for the onewheel plus battery box.   Perfect for replacing your worn out battery pack, stock broken BMS, or as base upgrade battery to add additional external batteries with.Kits made to order - current lead time: 10 days (or less)   Requires drilling holes in the battery box for the anti-spark switch wires to exit.  When charging, must have antispark switch plugged in to charge. Uses stock onewheel plus charger (58.4V) just fine. includes:4.25ah 14S replacement Onewheel plus batteryVoltmeter kitAnti-spark switch Harness - for turning board on/off & charging BMS has cell balancing system but low voltage cutoff is disabled for safety reasons (shut ting off while riding near battery empty).  BMS shutoff is optional for use (alternative negative lead in battery pack). Normal operation using this battery system would be to ensure you never deplete the battery pack past 40V while riding.  When voltmeter hits 40V under load (while riding), that is when you must stop riding.Always ensure XT90 loop key switch is fully seated when plugged in - it is a two-stage connector to negate any sparks upon plug in. Add - on extending wiring kit available - for adding additional range via external backpack battery or batteries built into fender.