Nimh from Batteryspace.com

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joystix2
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Joined: 12/05/2006
Points: 38

Does anyone have any feedback on the 36v10ah Nimh Batts from www.batteryspace.com? I'm wondering if they can really handle 30amp discharge. Thanks

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reikiman
reikiman's picture
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Joined: 11/19/2006
Points: 8446
Hey Ric, glad to see you

Hey Ric, glad to see you made it here. Weren't you asking about these batteries a couple months ago?

I have a pack from batteryspace made of their 9AH D cells .. I got the pack a couple years ago and they may have improved the cells since then .. e.g. mine is rated at 9 AH while now they're rated at 10 AH. I notice they list the rating as so:

  • Standard rate: 10Amp ( Recommended and warrantied)
  • Highest rate for continuous running: 30Amp
  • Max. Rate for short time: 50Amp ( Not recommend as working rate )

Discharge rates above 1C (you're talking about 3C) is not recommended and warrantied. I'm interpreting it to mean you shouldn't do it on a regular basis and that the farther above a 10 amp rate you go the dicier it will be. Even their F cell pack has the recommended and warranted rate at only 13 amp.

My experience with the pack I have is .. I tried using it on my bike with a wilderness energy 36v 35 amp brushed system. This is the same bike I showed you last fall at the EV rally, that I showed you with a pair of DeWalt packs for it. With the batteryspace 9AH pack, the pack would get very VERY hot when discharging at the highest rate (35 amp controller .. but I don't know the actual discharge rate) and sometimes it did not properly charge up after a discharge like that.

I recall that ChasB has an F cell pack from batteryspace and last year he was very happy with it.

- David Herron, http://www.7gen.com/

__________________

- David Herron, Green Transportation Examiner, The Long Tail Pipe, davidherron.com, 7gen.com, What is Reiki
- Electrified Electra Townie, 1971 Karmann Ghia (since sold), Kia Soul EV

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