5000 mAh Sub C

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5000 mAh Sub C

Postby Dipweed » September 20th, 2015, 10:02 pm

I have rebuilt a few packs and saved some money
But
Just found a new high power Sub C cell that should out perform Li Ion and all the rest.
Now
So far I have only 2 Sub C cells. Why? Well I wanted to get two Sub C cells to check performance and to insure the size is compatible with a Roomba battery rebuild.
The 2 Sub C cells are good to go on size. And I am testing them on the VW and they seem to be working as good or better than any Sub C cells I have ordered in the past.
Cost
$2.84/$3.00 per Sub C cell (with out buddy code discount)
Shipping is cheep. The Sub C is available in US or international warehouses.

Turnigy Sub-C 1.2V 5000mAh High Power Series NiMH Single Cell $2.84/$3.00

Will update post when I have a pac in built and in use.
:cheers:
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Re: 5000 mAh Sub C

Postby LazyRoomba » August 3rd, 2016, 10:34 am

Any updates?

I'm looking for a 3-4 hour run time.
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Re: 5000 mAh Sub C

Postby a1robotrepair » August 3rd, 2016, 12:44 pm

Don't bother, especially with the beast your running. Your going to need a INR Lithium battery pack. Lithium Power Inc is the only shelf brand I would recommend, 4400mAh. You're still only going to get a little over 2 hours on it on your bot, others will get greater than 2.5. Your going to need 8 3Ah 18650 INR batteries and make your own pack for nearly 3 hour run time. See building a Roomba battery for less, more in this case.
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Re: 5000 mAh Sub C

Postby glnc222 » August 3rd, 2016, 5:35 pm

The problem with such cells is the maximum drain rate supported, which they don't tell you. The longevity can be much shorter with low drain types -- which can be cheaper. The capacity is often over-stated on Chinese cells as well. It might work, but needs long term usage testing to know the full characteristics.
The cells in a Hybrid car cost $25 each and run over 100 amps. Lots of ways to make cells, suited for different applications. Exactly what the robot needs is not well documented.
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