will 10ah work with 1500w?

[hoserrb]

i picked up a wheel kit on the cheap and i wonder what if any issues i may run into
it is 48v 1500w
i have 2 other bikes, one a 48v-500w i ride and a 48v 1000w (wifes) both work well
i have 3 batteries 48v 10ah (13/3) available and a one 48v 13ah (13/4), all panasonic cells


will these batteries work with the 1500w?
mostly road, mild hills pleasure touring

i was trying to read about this and battery/hub match is important? and seems that this may drain quick or cut out or ?
dont want to get a new battery but do i need to?
thanks

 

[E-HP]

i picked up a wheel kit on the cheap and i wonder what if any issues i may run into
it is 48v 1500w
i have 2 other bikes, one a 48v-500w i ride and a 48v 1000w (wifes) both work well
i have 3 batteries 48v 10ah (13/3) available and a one 48v 13ah (13/4), all panasonic cells


will these batteries work with the 1500w?
mostly road, mild hills pleasure touring

i was trying to read about this and battery/hub match is important? and seems that this may drain quick or cut out or ?
dont want to get a new battery but do i need to?
thanks

You should be able to experience a similar level of performance as your wife's bike, but you have the potential of damaging the battery if you push it harder than that. Your pack would need to supply 30A+ for 1500W, so depending on which Panasonic cells they are made of, they may or may not support that level of performance.

If the new kit controller allows you to limit the maximum current, then it would be a good idea to do so, to match the discharge capacity of your battery pack.

 

[hoserrb]

specs. reading about this pack, seems that this pack should be just able to do 30a continuous discharge and be just enough
still researching if i can limit controller output.
has this display, not sure if i can do much
https://www.amazon.ca/LOLTRA-Intelligent-Electric-Bicycle-Display/dp/B07JZ3GCS8
i believe c5 in settings will allow me to lower controller output?

Nominal Voltage: 46.8V
Limited Charging Voltage: 54.6V/3A
Resistance (23 ± 2 ℃): ≤ 250mΩ
Charging time: 4-5 hours
Cycle life: ~800 cycles
Nominal Capacity: 10.5Ah
Watt Hours: 491.4Wh
Minimum wattage output: 500w
Amount of cells: 39
Cell manufacturer: Panasonic-Sanyo
Cell Size: 18650
Cell model: Panasonic-Sanyo NCR18650GA 3500mAh

 

[spinningmagnets]

You will be asking the battery packs to supply occasional peaks of 30A, that is the important number.

If the pack gets hot, or the output has significant voltage sag, then the battery should not be used in that application.

If they are authentic Panasonic cells, that's good, but all the major 5 cell manufacturers have a selection if cells. Some for max range, and others for high amps. I'd try all of your packs one at a time, and whichever has the highest top speed is experiencing the least amount of voltage sag, and that is the pack that is best suited to a 1500W / 30A load.

It's possible that none of your packs can safely supply 30A, and it's possible that all of them will be fine supplying 30A...

 

[Manbeer]

I have found the NCR18650GA To be a good high capacity but somewhat mediocre high current performer. While they say 10amps is The continuous discharge, I find they sag pretty badly near that level of discharge . Even running the same cells in 4p pulling around 1100 W peak, I can easily sag 5-6v If I lay on the throttle for too long

If it is feasible and getting a better battery pack is not an option, perhaps you could run two packs in parallel if they fit in your frame

 

[hoserrb]

ok im learning thanks
so i hooked stuff up with the 10ah. (i am in canada and its not really bike season). but i tried it out anyway.
under full accel the lcd showed up to 1500W used. it will cut out under full load and the battery light flashes, then comes back after a couple secs. with more careful acceleration its fine and with full pedal assist didnt go above 800w.

i also tried to lower power output by moving C5 in the lcd from 10 to 5, still ran up to 1500w under full load so perhaps im misunderstanding what that adjustment does in the lcd

i have room for 2 10ah so i could try in parallel

I did not try the 14ah battery but im thinking it would work better

so what battery would i really buy to make this work?

 

[Manbeer]

a lot of the guys here consider packs from em3ev to be the best in terms of performance and quality to value ratio. I would also recommend checking with Grin tech but it appears most of the applicable batteries are out of stock at the moment. However, in a pinch i would say the 48 or 52v 20ah triangle packs sold on amazon and aliexpress from unit pack power seem to do pretty well for packs using chinese cells, they usually are close to rated capacity and even though the power density is not quite on par due to the 2500mah cells there are so many of them (iirc 6 or 7p) that they should not sag much under that load plus you can get them with a 50a BMS to be on the safe side

https://www.ebay.com/itm/UPP-Li-ion-Ebike-Triangle-Case-Batteries-52V-48V-20Ah-for-750W-1000W-1500W-Motor-/254297690528?_trksid=p2349624.m46890.l49292

if money isnt the primary concern something from em3ev, luna, grin etc But factoring in shipping you could also be looking at nearly double the price. Do you get what you pay for? Usually, But in this case that battery should work well with your kit. When trying to pack a high amount of power into a small form factor There is often a great increase in price, this one is a little bit larger for the capacity but should offer consistent performance

 

[hoserrb]

the info is great thanks.
seems like my $100 kit (looks a lot like this one https://www.ebay.com/itm/Canada-stock-e-bike-Conversion-Kit-48V-1500W-Rear-hub-Motor-Wheel-26-29in-700C/164565964341?hash=item2650e55635:g:m6gAAOSwpfxfzyui bought it from a freight company, damaged packaging) needs a $400 battery, perhaps it wasnt such a good deal after all.

ok one more thought.
the controllers on the 2 bikes i have now are a 11/22amp on the 500w and 17/35amp on the 1000w. i do notice quite a good sag (at least 5v) with a 10ah battery and the 17/35 controller if i pull hard, not so with the 11/22. the new 1500w has a 22/45amp controller and its asking too much of the small battery
What about a controller that has a max output of 22-25amps like https://www.walmart.ca/en/ip/Sonew-E-Bike-Conversion-Accessory-22A-9Tube-36-48V-KT-22A-All-Normal-Heads-Rectangula-Controller-Electric-Bicycle-Controller-E-Bike-Controller/PRD40J70I0VRXHV, that would still provide 48x25=W? would that cause any issues other than slower? thats a $50 fix,

 

[E-HP]

$100 for that kit is a great deal. I'd change C5 to 00 first before looking at getting a new controller.

 

[hoserrb]

i "paralleled" couple 10ah batteries, no issues with cutting out now. pulls 1900w under full load while accelerating. pretty happy, rolls up to 30 mph . now, it does make 40 on the stand so maybe i need to lose some weight...