The discharge curve for Lithium batteries is very different from Lead.
(it is very flat). There is almost zero sag, but at some point the BMS
will (hopefully!) detect a low cell voltage and disconnect your output,
causing the whole scooter to stop without warning. (If it fails to do
so, the lowest cell will get reversed and die in a potential blaze of
glory...)
You can expect the range to be higher than lead batteries, but the "drop
off" to be sharper at the end. If you are monitoring voltage, it will be
in the "nominal" range until right before you run out of juice, at which
point it will start to drop very quickly. So there is less warning of a
"low tank" unless you have an amp hour (or watt hour) counter and know
the capacity of your battery.
Jay
On 5/24/20 11:51 PM, Lawrence Rhodes via EV wrote:
After riding 14 miles in two trips over two days or more and letting the bike
sit for days starting voltage 26.38vdc or higher. A few hours ago voltage
25.97vdc. Now 25.90. These Valance 40 ah lithium do not act like lead. Lead 40
ah will give 20 miles. Will my batteries soon drop precipitously? I guess I
should ride down to 25vdc and check how far I have gone. This is carrying a 240
pound person and up my hill twice. The batteries put out 30 amps continuous.
Lawrence Rhodes
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