Originally Posted by Evoracer
It seems most of the batteries over 4000mah have gone to the flat rectangular shape. Zippy still has the 4000 hardcase packs with the humps. Whats the reason for anything larger ?? With 4000 packs available at 40-50c, it seems anything larger is just overkill.
I ran all the Evo series cars. Still great and I miss it sometimes.
The point with anything larger is end-of-run-voltage. Voltage = HP = SPEED. The longer that your battery stays at a higher voltage, the more speed potential you have and it helps you even out your lap times between the start of the clock and the finish.
When I used to run 5000mah 35C packs, after run voltage would be about 7.6something volts. Now that I run 5000mah 50C packs, after run voltage is 8.0something volts.
Even if it gains you .2/lap, by the end of 5 laps you have a 1 second lead over NOT having the power in your system. 1 second could mean the difference between 1st and 2nd, or needing marshalled and having that 1 second in the bank.
On my home track 20+ laps is normal. .2/lap x 20 laps = 4 full seconds. 1st -3rd are normally seperated by much less than that. That's like getting one free position, or one free marshall, or several free wall love taps.
In 1S racing, end-of-run-voltage is KING for the very same reasons.
To the OP, you can always get a conventional flat bottom pack and stick some self-stick foam on the bottom of the pack if necessary.