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Old 11-02-2015, 11:20 PM
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Occulta (Chris)
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Somebody wanted a battery!

Maybe this one will fit the bill

100,000mAh with 5V, 12V, 16V, 19V & 24V output.

No idea how good it is; just a FYI

Details here

Chris
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Old 12-02-2015, 12:06 AM
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Visionary (David)
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In awe and gasping for breath. I want two!
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Old 12-02-2015, 12:34 AM
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GTB_an_Owl (Geoff)
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it's only 3.7 volts 100amp hour

geoff
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Old 12-02-2015, 12:40 AM
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Steffen
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It would still be 30Ah at 12V (assuming the internal converter works more or less without loss).

Cheers
Steffen.
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Old 12-02-2015, 05:35 AM
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ZeroID (Brent)
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My wife works in the UPS ( Uninteruptible Power Supply ) business. I can get a 600 Amp\hr battery anytime ... if I could carry it !! About 60 kg !!

Just FYI though, modern UPS's work at about 95-97% efficiency nowadays. Older models used to be around 80-85% at best. Electronics and control has evolved a long way.
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Old 12-02-2015, 07:21 AM
AndrewJ
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What intrigues me is it is only 2.5kg ( incl case )????
I know LiPo is lighter than LeadAcid
but can you get 100Ahr at 3.7v with that weight of batteries???

Andrew
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Old 12-02-2015, 07:42 AM
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tonybarry (Tony)
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Hi Andrew,

LiPo has an energy density of ~ 250 Wh/L while lead-acid has 80 Wh/L

http://www.altenergymag.com/emagazin...lications/1884

This figure is in litres, so weight for weight, the differential is even higher between LiPo and lead-acid.

The big question for me is safety - LiPo batteries must be carefully controlled for charge current and temperature or they can get very hot and self-immolate. And they must not be discharged below a certain point, which means the battery controller must be quite a bit smarter than an equivalent lead acid controller.

Regards,
Tony Barry
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