Floont wrote:A fully charged 24v SLA is about 26.4v (just measured mine), but the sag is significant at high amps. I want to get some real-world data on that using my Fluke (maybe today). The full charge on an SLA does not last more than a few minutes before it is running nominally 24 to 25v at load until it drops below 24v after 50% discharge. And of course, for battery life you gotta recharge an SLA at that point (another SLA disadvantage).neptronix wrote:...So in reality maybe it's 1 volt less nominal? And a little higher powered than the stock battery when you have the 6S pack at higher SOC, IE 25.2v fully charged.
#1. 6S*P should work fine, with the Currie-EZip-IZips etc.
But the 7S*P works much better, (my opinion).
25.9v, 29.4 full charge, gives a, noticeable, higher speed.
Recommended empty is when the green light stays out, with throttle released.
You lose LVC, low voltage protection.
Which makes this a great idea:
1-8S Lipo Battery Tester Low Voltage Buzzer Alarm. $3.29 w/shipping
Also usable as a on bar voltmeter-fuel gauge, just plug pin 1 and 2 into throttle leds.
Much more accurate, bright enough, except for in direct sun.
#2. Disadvantage of SLA.
The Currie oem 24v 10ah pack uses 2 - 12v 10ah, this 10ah rating is determined at a 20 hour discharge rate.
When discharged in 1 hour, the actual output is a pitiful 6.13ah!
1/2 hour, would be noticeably worse!
I've stuffed 31.2ah of 25.9v Li-ion into the oem EZip battery pack case.
Which gives me 6x the range and about 10% more speed!
Using recycled notebook cells! ... Total cost? ... About $50 ... including new charger!!!
Of course it involved a fair bit of work and a great deal of testing.
But well worth it, in my opinion!
Home Made Battery Pack