Battery pack status

1 reply [Last post]
Webmaster's picture
Joined: 11/16/2006
Points: 1003

I've been thinking that I'd like to know approximately where the "50%" discharge is on my xb600 48 volt pack. Then, I can compare that to "miles" and know when I'm below that 50% discharge. I'm supposing I can get a fairly accurate reading by checking the pack voltage at the charge terminal and then checking it subsequently and if I know an approximate pack voltage that would be about 50% discharge I'd then know how many miles I can go before getting to that point...approximately. Does this make sense? Is there a "voltage number" that would indicate approximately a 50% discharge? I know the resting full charge reads 56 volts. Would a 50% discharge be like...49 volts...50, 51??? Is there a way to determine this?



- David Herron,

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.
LinkOfHyrule's picture
Joined: 10/17/2007
Points: 730
Re: Battery pack status

Voltage is indicate of charge status, so yeah, you could guess at approximately where 50% discharge is. I think it's like around 11.3 or so volts per battery.

However, if you really want an accurate reading get a road amp-hour meter, like a Watts-Up or a Cycle Analyst. Since they actually measure how much energy you've actually taken out of the pack, they're much more accurate than any voltage meter.


The author of this post isn't responsible for any injury, disability or dismemberment, death, financial loss, illness, addiction, hereditary disease, or any other undesirable consequence or general misfortune resulting from use of the "information" contained herein.

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.


High Voltage: The Fast Track to Plug In the Auto Industry A behind-the-scenes look at the robustly competitive race to dominate the market for electric cars.
e-Moto G3 Volt Silicon Electric Scooter Commute and get around town on the G3 Volt Electric Scooter from E-Moto.
JOLT!: The Impending Dominance Of The Electric Car And Why America Must Take Charge
Build Your Own Electric Motorcycle
Electric Bicycles: A Guide to Design and Use
Revenge of the Electric Car The electric car is not only back from the dead, it's inevitable

Who's new

  • Mickel1992
  • hendrichst
  • patjeremlinux
  • zyhgqd
  • chrisup
Customize This