BATTERY CHARGING GUIDELINES

[ElectricBikeNoob]

What are battery charging rules, guidelines, suggestions for a Samsung downtube battery?

1. Rated capacity: 10AH
2. Voltage: 48V
3. Charging Voltage: 54.6V
4. Discharge cutoff voltage: 35.75V
5. Cell: Samsung 18650 (13S4P)
6. Standard charging: 0.2C constant current(CC) charge to 54.6V, then constant voltage (CC) 54.6V charge till charge current decline to ≤0.05C
7. Continuous discharge current: 15A
8. Pulse/Max discharge current 30A
9. Max charging current : 5A
10. Charging temperature: 0~45℃
11. Dischargeing temperature: -20~55℃
12. Diamesion: 130x90x350mm
13. It has a 5V USB output for charging cell phone or ipad

Charger information
1. Charging voltage: 54.6V
2. AC input: 90V~120V or 220V~240V
3. Charging current: 2A

Should it be fully discharged before charging again? How is overcharging it too?

 

[dnmun]

no, avoid totally discharging the battery. it is really small so you should avoid high current draws also.

charge the battery to full charge when you need to use it. do not leave it fully charged. with use and age the pack will become unbalanced and then you will need to charge for longer periods of time to force it to balance under the BMS.

 

[ElectricBikeNoob]

no, avoid totally discharging the battery. it is really small so you should avoid high current draws also.

charge the battery to full charge when you need to use it. do not leave it fully charged. with use and age the pack will become unbalanced and then you will need to charge for longer periods of time to force it to balance under the BMS.

Thank you much

 

[wesnewell]

If you want it to last, don't discharge below 44V resting, and I'd never go below 39V resting.

 

[ElectricBikeNoob]

If you want it to last, don't discharge below 44V resting, and I'd never go below 39V resting.

What does this mean?

 

[dogman dan]

Resting voltage is the measured voltage of the pack, when it's not in use. But when running, it's likely to read 2-4 v lower.

The BMS may let your pack discharge to about 42v before stopping, and most of us agree that while running the battery till it cuts out is safe to do, it's also best to stop sooner, if convenient.

So don't run it empty ever, unless you must to get home. Ideally wait to recharge it till you will ride again soon. But if that's just too inconvenient, at least wait till the night before you ride to recharge. If you ride to work, charge again at work if convenient to do that. Smaller cycles are best.

If you do drain it all the way, recharge it just a little bit right away, like half an hour on the charger. Then finish it later.

Once every 10 rides or so, it might be good to let the charger run all night, to fully balance the pack. This is happening even after the light is green.

DONT leave the battery out in a hot garage all day. Heat kills. Can't avoid it being hot when you ride, but you don't need to bake it in the closed up garage all day.

 

[ElectricBikeNoob]

Resting voltage is the measured voltage of the pack, when it's not in use. But when running, it's likely to read 2-4 v lower.

The BMS may let your pack discharge to about 42v before stopping, and most of us agree that while running the battery till it cuts out is safe to do, it's also best to stop sooner, if convenient.

So don't run it empty ever, unless you must to get home. Ideally wait to recharge it till you will ride again soon. But if that's just too inconvenient, at least wait till the night before you ride to recharge. If you ride to work, charge again at work if convenient to do that. Smaller cycles are best.

If you do drain it all the way, recharge it just a little bit right away, like half an hour on the charger. Then finish it later.

Once every 10 rides or so, it might be good to let the charger run all night, to fully balance the pack. This is happening even after the light is green.

DONT leave the battery out in a hot garage all day. Heat kills. Can't avoid it being hot when you ride, but you don't need to bake it in the closed up garage all day.

Understood.!

 

[999zip999]

What are you using this battery for ?

 

[dogman dan]

One hopes, for a bike or scooter that has no more than a 15 amps controller.

"15 amps max continuous discharge"

 

[ElectricBikeNoob]

One hopes, for a bike or scooter that has no more than a 15 amps controller.

"15 amps max continuous discharge"

So what does this mean?

 

[Rodney64]

One hopes, for a bike or scooter that has no more than a 15 amps controller.

"15 amps max continuous discharge"

So what does this mean?

yoir maximum discharge continuous is 15amps.

 

[999zip999]

A battery MUST match the controller or suffer a quick death. So give information on your kit. Pic, link.
This battery is meant for a 500watt kit No more. That's at it's top limits. Mainly meant for a 250watt euro limit ebike for long life. It also depends on weight, hills or pedal first starts ect.