Quote:
Originally Posted by scottyb
Ah (amp hours) is fuel which equals run time. The inherent higher voltage of a lithium battery equals reduced amperage use. Read that again because OHMS law, volts + amps = watts
The more voltage you have the less amperage you need to produce the same wattage (work). That being said.
We are running the Eco 51v/72ah pack in our big tire, big motor Ezgo off and on the road. The result is better performance and longer run time than the 6/8v Trojan T875 pack. Plus we lost 300 pounds of dead weight. Reduced load = less watts needed. These 2 factors, more voltage and less load make the 72AH pack quite serviceable and its relatively affordable.
Remember Amp hour capacity is fuel capacity. A more critical spec is maximum amperage draw. This is a battery spec, a limit where the pack's battery management system (BMS) shuts off the current draw to save the pack from being damaged. We have seen 100 maximum amp draw (MAD) packs shutdown on stock 'for golf' carts. And we have seen 200 MAD packs shut off big tire and aftermarket motor carts.
The ECO battery has a MAD rating of 300 amps. This is my choice having reviewed hundreds of Alltrax monitor files for so many configurations.
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It's Volts * amps = watts!