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100 W
- Joined
- Sep 1, 2022
- Messages
- 172
hi Endless sphere
Ineed your help knowledge:
I Have a xiongda 2 speed motor 48volt high torque 350w rear. 15 amps max
the controller is a kt48svprc xd15d ,
rated current 7A;
max current:15A +-1A it looks similar to this one in the very bottom link.
I am exploring the possibility of building a battery with 16s 1p used cells from batteryhookup to go up hill not very long distance
:
They say on their site USED HEADWAY 38120 HP 3.2V 8AH LIFEPO4 BATTERY 5 dollars.
THESE CELLS HAVE ALL BEEN VOLTAGE TESTED AND INSPECTED TO BE IN PERFECT WORKING CONDITION AND HAVE ALL BEEN REMOVED FROM WORKING MODULES. WE HAVE TESTED HUNDREDS OF THOUSANDS OF CELLS OUT OF THESE MODULES AND WE HAVE BEEN AVERAGING AROUND 95% CAPACITY. WE GUARANTEE NO DEAD CELLS
So they say averaging 95 pourcent capacity
PREBUILD
============================
how many of those cells should i buy to be sure I have good capacity cells ? 18 19? and dismissing the lower capacity ones?(only 5 dollars each !)
How exactly can i mesure the capacity in them and is it necessary ? with what tool?
is testing for the internal resistance a necessity ?
++++++++++++++++++++++++
once that is done , i will probably need a good bms and stuff for safety precautions, what BMS do you suggests me ?what are my choices ?
NOTE that the bike could possibly eventually host an additionnal second 15A motor eventually for front wheel or just a pure replacement of xiongda for a stronger motor if xiongda does not do the job in hills. so i dont know if there would be a down side to have a Bms for higher amps than what the xionda and controler would ask at fist(15amp.)
Do i need a LVD?
---------------------
CHARGER I do wish to have a smart charger that give current smartly so that it is would still be safe to keep the charger plugged if i forget to unplug it for a day or 2. If possible i would like also to be able to select charge at 80 90 or 100 pourcent capacityand to select the current charging them . i wont buy a satiator. which chargher would fit those wish a fit hte bms that would serve me right?.
--------
I wonder if there is top balancing or bottom balancing needed.
any other gadjet would be useful ? i m a noob so tell me what i dont see or should be aware , im open.
thanks
https://www.aliexpress.com/item/3282132 ... IQaT6Ecexa
Ineed your help knowledge:
I Have a xiongda 2 speed motor 48volt high torque 350w rear. 15 amps max
the controller is a kt48svprc xd15d ,
rated current 7A;
max current:15A +-1A it looks similar to this one in the very bottom link.
I am exploring the possibility of building a battery with 16s 1p used cells from batteryhookup to go up hill not very long distance
:
They say on their site USED HEADWAY 38120 HP 3.2V 8AH LIFEPO4 BATTERY 5 dollars.
THESE CELLS HAVE ALL BEEN VOLTAGE TESTED AND INSPECTED TO BE IN PERFECT WORKING CONDITION AND HAVE ALL BEEN REMOVED FROM WORKING MODULES. WE HAVE TESTED HUNDREDS OF THOUSANDS OF CELLS OUT OF THESE MODULES AND WE HAVE BEEN AVERAGING AROUND 95% CAPACITY. WE GUARANTEE NO DEAD CELLS
So they say averaging 95 pourcent capacity
PREBUILD
============================
how many of those cells should i buy to be sure I have good capacity cells ? 18 19? and dismissing the lower capacity ones?(only 5 dollars each !)
How exactly can i mesure the capacity in them and is it necessary ? with what tool?
is testing for the internal resistance a necessity ?
++++++++++++++++++++++++
once that is done , i will probably need a good bms and stuff for safety precautions, what BMS do you suggests me ?what are my choices ?
NOTE that the bike could possibly eventually host an additionnal second 15A motor eventually for front wheel or just a pure replacement of xiongda for a stronger motor if xiongda does not do the job in hills. so i dont know if there would be a down side to have a Bms for higher amps than what the xionda and controler would ask at fist(15amp.)
Do i need a LVD?
---------------------
CHARGER I do wish to have a smart charger that give current smartly so that it is would still be safe to keep the charger plugged if i forget to unplug it for a day or 2. If possible i would like also to be able to select charge at 80 90 or 100 pourcent capacityand to select the current charging them . i wont buy a satiator. which chargher would fit those wish a fit hte bms that would serve me right?.
--------
I wonder if there is top balancing or bottom balancing needed.
any other gadjet would be useful ? i m a noob so tell me what i dont see or should be aware , im open.
thanks
https://www.aliexpress.com/item/3282132 ... IQaT6Ecexa