Further to my general post here: http://forums.offshoreelectrics.com/...8022#post58022 I have to say Im now in quite a conundrum regarding batteries.
Firstly, Id like to confirm that with 4-5000mah battery packs (whether NiMh or LiPo) Run Time is approximately 6-10 minutes - is this correct?
If so this seems crazy from a recreational (non racing) point of view - over $500 invested for 6 mins use... - but perhaps someone can put me straight there?
So assuming the above is correct, I think I need some guidance. I think I need at least double the above Run Time, at least 20 minutes, to make this worthwhile for recreation.
This would seem to mean that I need to put at least 4 x 4500mah NiMh batteries in at once to give 14.4V and 9000mah overall. This is cost effective (eg: 4 x these: http://www.offshoreelectrics.com/pro...d=ep4500-6cell), but is this going to far from a weight perspective?
To save weight (& only need 2 batteries) it seems Id either need NiMh that are either much higher capacity (say 8-10,000mah each), or that are 14.2V per battery (at say 4500mah each). However, I havent really seen these around?
I can of course solve this by going to LiPos, however to get the required Run Time / mah the cost appears to be 1 to 1.5 times the cost of the boat itself, plus an expensive charger?
I look forward to your comments and hopefully I can be pointed in the right direction - or is everybody running around with $1000 worth of batteries?
THANKS!
Firstly, Id like to confirm that with 4-5000mah battery packs (whether NiMh or LiPo) Run Time is approximately 6-10 minutes - is this correct?
If so this seems crazy from a recreational (non racing) point of view - over $500 invested for 6 mins use... - but perhaps someone can put me straight there?
So assuming the above is correct, I think I need some guidance. I think I need at least double the above Run Time, at least 20 minutes, to make this worthwhile for recreation.
This would seem to mean that I need to put at least 4 x 4500mah NiMh batteries in at once to give 14.4V and 9000mah overall. This is cost effective (eg: 4 x these: http://www.offshoreelectrics.com/pro...d=ep4500-6cell), but is this going to far from a weight perspective?
To save weight (& only need 2 batteries) it seems Id either need NiMh that are either much higher capacity (say 8-10,000mah each), or that are 14.2V per battery (at say 4500mah each). However, I havent really seen these around?
I can of course solve this by going to LiPos, however to get the required Run Time / mah the cost appears to be 1 to 1.5 times the cost of the boat itself, plus an expensive charger?
I look forward to your comments and hopefully I can be pointed in the right direction - or is everybody running around with $1000 worth of batteries?
THANKS!

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