Kokam 1500s vs TP2100s... who's winning?

Newberry · Oct 26, 2003, 12:00 AM

I have a TP2100 pack for my mpjet 25/35 (pulling around 14 amps WOT but more like 7-9 amps during most of my flying.

The Kokam 1500s sure look appealing at $50 vs $80 for the TP packs.
Am I missing some reason the 1500s wouldn't be a good choice?
Thanks for any help.
Wayne

BEC · Oct 26, 2003, 02:06 AM

Based on my so far very limited experience with the K1500s and not much more with the TP2100s, I'd say you've nothing to lose but some duration. You'll get as good power and at least as high a percentage of the rated capacity out of the K1500s as you get from your TP2100s used the way you describe.

luc · Oct 26, 2003, 03:12 AM

Well, it depends what you want to draw. I draw 20A peaks and avg 15A during the flight. It's obviously a limit for the TP as they come quite hot. I don't think I could draw that out of the kok1500.
If you draw 5 to 6C as you say, you can try these cells (btw, tests show according to other threads the 8C are overstated for these cells).
Another solution which will give you better voltage and 20g less than the TP are the CBP 850 in 3S2P pack. I manage to draw 10C avg from these cells which don't heat much. And they hold a better voltage...but you have to build your own packs.

Oct 26, 2003, 12:00 AM	#1
Newberry Registered User Join Date: Jul 2003 Location: Clintwood, Virginia Posts: 1,145	Kokam 1500s vs TP2100s... who's winning? I have a TP2100 pack for my mpjet 25/35 (pulling around 14 amps WOT but more like 7-9 amps during most of my flying. The Kokam 1500s sure look appealing at $50 vs $80 for the TP packs. Am I missing some reason the 1500s wouldn't be a good choice? Thanks for any help. Wayne

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Oct 26, 2003, 02:06 AM	#2
BEC Registered User Join Date: Jan 2001 Location: Auburn, Washington USA Posts: 12,560	Based on my so far very limited experience with the K1500s and not much more with the TP2100s, I'd say you've nothing to lose but some duration. You'll get as good power and at least as high a percentage of the rated capacity out of the K1500s as you get from your TP2100s used the way you describe.

Oct 26, 2003, 03:12 AM	#3
luc I plant balsa sticks too Join Date: Feb 2000 Location: France Posts: 3,575	Well, it depends what you want to draw. I draw 20A peaks and avg 15A during the flight. It's obviously a limit for the TP as they come quite hot. I don't think I could draw that out of the kok1500. If you draw 5 to 6C as you say, you can try these cells (btw, tests show according to other threads the 8C are overstated for these cells). Another solution which will give you better voltage and 20g less than the TP are the CBP 850 in 3S2P pack. I manage to draw 10C avg from these cells which don't heat much. And they hold a better voltage...but you have to build your own packs.