Evolvedbicycles
1 mW
Hi Everyone in the Ebike world
I have this problem with a 10 Ah 48 volt battery. It's was new in August 215 and has about 60-80 charging cycles. Here is the issue. It charges fine and reaches 54.1 volts when charged. It holds a charge for months and months. I ride a mile or less and the controller just goes dark and the power get cut. I turn the key off, then back on and power is restored. This happens no matter how much load the motors is demanding. It happens with PAS only and throttle only. Sometimes I get 100 feet, sometimes a mile. It is totally random. Pot holes don't cause the problem. It happens on my service lift too.
So I started a technical help request with our thin-skinned ebike friends down under. They can only sell parts as good as they can buy. I don't blame the suppliers. They do try, I will give them that. Fair enough I say. I blame US Customers for buying inexpensive crap systems. Anyway they had me reset my P setting which I did. The controller for this 48v system with 10 Ah battery is discontinued I am told. After 8-12 emails back and forth I can't fix the problem. So I cut my whole loss on the down under system, and hope to reuse the battery. I rip that bike up, and it's now getting an Xtracycle Leap kit and I am trying Golden out. Our friends to the north are known for being very polite.
So I buy a new kit from the hip guys in So. Cal whos names rhymes with Kahuna. I buy a new hot all black 2017 Adventure Hybrid with remote lockouts WTB tubless rims from Bikes Direct perfect for my height and guess what. BUT HOLY CRAP the 48 volt BBS02 acts the same way. (I am reusing the old battery of course) Randomly the battery shuts down and then works find when the key is cycles off then on. Right before it cuts out the power goes into mini surges of on-off before it goes dark. This new BBS02 mid-drive has so much more torque than my hub motor, I did not notice the power flutter right before it went dark.
It was never the controller, it is my battery!
So ebike geniuses of the world, any ideas. The cells have to be fine. It charges fine and hold a charge and does not get warm or act weird otherwise.
Maybe the switch is bad? Maybe the BMS is faking out? I will greatly appreciate any help.
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UPDATE ON AUGUST 10TH 9:16 AM PST
I disassembled the battery out the case retaining the yellow plastic insulating box. This is a 13s4p 48 Volt 10 Ah with HH 22650-3M cells.
The problem is not with the switch. With a fresh charge and zip-tied the throttle on with the bike in the stand and the battery would not trip off. So I slipped the battery into my new triangle bag and had to ride it 1/2 mile to get the battery to stop. When I tested it, the voltage started off around 24 volts and seemed to rise slowly like up to 30, then 32 moving up a tenth at a time. I repeated the ride and the battery "tripping" off 3 times. As soon as I either cycle the switch or disconnected the XT60 the voltage will sprang right back to a little above 52 volts when reconnected. It "trips into this half voltage state randomly. 3 times I could go 1/2 mile and it failed exactly in front of the same house, then later it would trip in under 100 feet. So the more I pushed it the faster it tripped. Nothing got hot or looked weird or smelled like over heating.
Tonight I will pull the sleeve off and test all the cell groups before and after it goes onto the "tripped" state.
If I replace the BMS, does anyone know if I can I use any BMS set up for 48v's with 13 series wiring? Or does it have to be the exact same as the original?
Thanks very much for this help.
I have this problem with a 10 Ah 48 volt battery. It's was new in August 215 and has about 60-80 charging cycles. Here is the issue. It charges fine and reaches 54.1 volts when charged. It holds a charge for months and months. I ride a mile or less and the controller just goes dark and the power get cut. I turn the key off, then back on and power is restored. This happens no matter how much load the motors is demanding. It happens with PAS only and throttle only. Sometimes I get 100 feet, sometimes a mile. It is totally random. Pot holes don't cause the problem. It happens on my service lift too.
So I started a technical help request with our thin-skinned ebike friends down under. They can only sell parts as good as they can buy. I don't blame the suppliers. They do try, I will give them that. Fair enough I say. I blame US Customers for buying inexpensive crap systems. Anyway they had me reset my P setting which I did. The controller for this 48v system with 10 Ah battery is discontinued I am told. After 8-12 emails back and forth I can't fix the problem. So I cut my whole loss on the down under system, and hope to reuse the battery. I rip that bike up, and it's now getting an Xtracycle Leap kit and I am trying Golden out. Our friends to the north are known for being very polite.
So I buy a new kit from the hip guys in So. Cal whos names rhymes with Kahuna. I buy a new hot all black 2017 Adventure Hybrid with remote lockouts WTB tubless rims from Bikes Direct perfect for my height and guess what. BUT HOLY CRAP the 48 volt BBS02 acts the same way. (I am reusing the old battery of course) Randomly the battery shuts down and then works find when the key is cycles off then on. Right before it cuts out the power goes into mini surges of on-off before it goes dark. This new BBS02 mid-drive has so much more torque than my hub motor, I did not notice the power flutter right before it went dark.
It was never the controller, it is my battery!
So ebike geniuses of the world, any ideas. The cells have to be fine. It charges fine and hold a charge and does not get warm or act weird otherwise.
Maybe the switch is bad? Maybe the BMS is faking out? I will greatly appreciate any help.
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
UPDATE ON AUGUST 10TH 9:16 AM PST
I disassembled the battery out the case retaining the yellow plastic insulating box. This is a 13s4p 48 Volt 10 Ah with HH 22650-3M cells.
The problem is not with the switch. With a fresh charge and zip-tied the throttle on with the bike in the stand and the battery would not trip off. So I slipped the battery into my new triangle bag and had to ride it 1/2 mile to get the battery to stop. When I tested it, the voltage started off around 24 volts and seemed to rise slowly like up to 30, then 32 moving up a tenth at a time. I repeated the ride and the battery "tripping" off 3 times. As soon as I either cycle the switch or disconnected the XT60 the voltage will sprang right back to a little above 52 volts when reconnected. It "trips into this half voltage state randomly. 3 times I could go 1/2 mile and it failed exactly in front of the same house, then later it would trip in under 100 feet. So the more I pushed it the faster it tripped. Nothing got hot or looked weird or smelled like over heating.
Tonight I will pull the sleeve off and test all the cell groups before and after it goes onto the "tripped" state.
If I replace the BMS, does anyone know if I can I use any BMS set up for 48v's with 13 series wiring? Or does it have to be the exact same as the original?
Thanks very much for this help.