400+ miles with my 24V 20mph mod. New batteries are working nicely, am also using 3 stage charger, charges to 27.2V. Just checked voltage at end of 10mile 20mph run, 25.4V, 23v would be, my empty, others say 21V. I'm trying to stick to the 23V minimum, with the expectation of almost double the recharge cycles.
24v+ = Green LED when throttle released.
24V- = Yellow LED when throttle released.
22.5V- = Red LED when throttle released.

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24VDC 2A 3-STAGE BATTERY CHARGER | AllElectronics.com

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