imorton
1 kW
Hello Everyone, I should introduce myself. I just bought a Currie Ezip 750 scooter on sale (new) from Walmart and I am throughly enjoying it, and I am hooked on electric scooters. I can see that a brushless motor and Lipo batteries are in my future.
My issue today is that I have the original new 24v 12Ah battery pack that came with the scooter, and I purchased two 12v 12Ah batteries from eBay to make myself a spare (longer range) battery pack. I have gone through @ three full discharge and full recharge cycles to "break-in" my SLA batteries. I am using a Watt Power meter to track Volts, Amps, Wh, Wpeak, Vminimum, and Total Wh & Ah usage.
Now the more that I research scooters I see that the Peukert Effect will come into play here. My 24v 12Ah battery pack will realistically give me 7-8 Ah due to the high discharge rate (scooter draws @ 10-16 amps while cruising) as I am @ 235 lbs.
My question is, would I be better off by throwing the spare battery pack into my rear basket and swap it into my battery tray when the OEM battery runs low, OR should I put the spare battery pack in the rear basket and actually wire it in parallel with the OEM battery system?
The way I understand the Peukert Effect is that the higher discharge percentage vs the battery pack capacity is what affects the loss. EX: cruising speed uses @10-16 amps, which is drawn from one battery pack at a time, VS cruising speed using @10-16 amps but being drawn from both battery packs simultaneously? Hmmmmm.. decisions decisions...
So if I draw @ 10-16 amps from one 24v 12Ah battery pack, I may only achieve a 40-50% usable Ah capacity (ex: 40-50% of 12Ah = 4.8 - 6 Ah x 2 battery packs = 9.6 - 12 Ah useable), YET if I have both banks tied in together (24v 24Ah) and draw the same cruising amperage, my Peukert Effect will be less, possibly being able to use 60-70% of the whole two battery pack Ah capacity thus achieving more range. (ex: 60-70% of 24Ah = 14.4 - 16.8 Ah useable)
I hope my english is making sense and that I am using the proper battery lingo
PS: after doing some research I see that Lithium A123 cells would be an ideal battery technology for my scooter, just not ideal for my pocketbook, maybe on my next one.. hmmm
My issue today is that I have the original new 24v 12Ah battery pack that came with the scooter, and I purchased two 12v 12Ah batteries from eBay to make myself a spare (longer range) battery pack. I have gone through @ three full discharge and full recharge cycles to "break-in" my SLA batteries. I am using a Watt Power meter to track Volts, Amps, Wh, Wpeak, Vminimum, and Total Wh & Ah usage.
Now the more that I research scooters I see that the Peukert Effect will come into play here. My 24v 12Ah battery pack will realistically give me 7-8 Ah due to the high discharge rate (scooter draws @ 10-16 amps while cruising) as I am @ 235 lbs.
My question is, would I be better off by throwing the spare battery pack into my rear basket and swap it into my battery tray when the OEM battery runs low, OR should I put the spare battery pack in the rear basket and actually wire it in parallel with the OEM battery system?
The way I understand the Peukert Effect is that the higher discharge percentage vs the battery pack capacity is what affects the loss. EX: cruising speed uses @10-16 amps, which is drawn from one battery pack at a time, VS cruising speed using @10-16 amps but being drawn from both battery packs simultaneously? Hmmmmm.. decisions decisions...
So if I draw @ 10-16 amps from one 24v 12Ah battery pack, I may only achieve a 40-50% usable Ah capacity (ex: 40-50% of 12Ah = 4.8 - 6 Ah x 2 battery packs = 9.6 - 12 Ah useable), YET if I have both banks tied in together (24v 24Ah) and draw the same cruising amperage, my Peukert Effect will be less, possibly being able to use 60-70% of the whole two battery pack Ah capacity thus achieving more range. (ex: 60-70% of 24Ah = 14.4 - 16.8 Ah useable)
I hope my english is making sense and that I am using the proper battery lingo
PS: after doing some research I see that Lithium A123 cells would be an ideal battery technology for my scooter, just not ideal for my pocketbook, maybe on my next one.. hmmm