MY ELECTRIC BIKE IS NOT TAKING A CHARGE

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pauljramberg
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Joined: 03/08/2011
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MY ELECTRIC BIKE BATTERY IS NOT TAKING A CHARGE. Charger is brand new. fuse on battery pack is good. but the charger light reads green and never red as in never charging the battery. please help.

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colin9876
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Joined: 10/23/2008
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Re: MY ELECTRIC BIKE IS NOT TAKING A CHARGE

When did you last use the bike? If its been left discharged for a few months or more the battery plates will be sulphated and wont take charge.

Don S Schaeffer
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Re: MY ELECTRIC BIKE IS NOT TAKING A CHARGE

If you kept the bike hooked up to the charger for a long time, the plates could be warped.

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Spaceangel
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Re: MY ELECTRIC BIKE IS NOT TAKING A CHARGE

You say your bike in NEW? How new? Are you in the south or north? I am in Massachusetts and we had wicked cold temps here and record snows so needless to say I haven't rode my XM-3000 for a couple or three months. I did leave mine on charge 24/7 though. I have a few (3) charge ports, stock IEC connector, Anderson SB-50 gray, and a round TNC scooters connector so I can charge with any charger I have. I finally rode it yesterday and went a couple of miles and my pack didn't even get out of green area. Thursday it is supposed to get up to high 50's and will go bike riding again. I use the extra connectors to also measure voltage of my pack to make sure it is 68 or 69 volts. Also for porch lighting too but that is another story.

MY ELECTRIC BIKE BATTERY IS NOT TAKING A CHARGE. Charger is brand new. fuse on battery pack is good. but the charger light reads green and never red as in never charging the battery. please help.

I have a dead pack recently wired up again and I am wasting my time I am sure charging them but light goes to green every so often but still that pack is dead. I have it hooked up to a DC-DC converter to 12 volt lights as a load even though it isn't much of a load and is still dead. I use it to figure out if old pack will ever come back but dead is dead and sulphated batteries are sulphated as in dead and can't be rejuvenated. So can your pack be measured for charge current and voltage of pack? Even after a short run I did 12 Amp charge and quickly dropped to about an amp in short time and back to full green light. I use the Anderson connector to a separate meter to help verify dash fuel gauge and I cut in a shunt for an Amp Meter to measure current when riding my scooter. All my charge ports are HOT and not fused so can you measure voltage of your pack there? Can you plug in charger and see what voltage you have? Does it pulse up and down? Does it get up to pack voltage and turn off? There are different types of fairly regulated chargers. Can you put scooter on center stand and spin rear tire / wheel? Usually side stand has to be folded up for obvious reasons. Almost any load of more than an amp or two on dead pack and it drops from 69 volt down to 40 something very fast so that is how I know my dead pack is dead. I will drop off old pack to recycle Pb when I buy my new pack in April. U-1 batteries here need core but those little 12 volt 20 AH batteries don't.
Most charging systems on scooters go directly to battery pack unlike my old scooter which went through circuit breaker and I used to turn it off till one day I noticed my pack wasn't charging. I quickly rewired it too like the XM-3000 and XM-3100 scooters of eXtreme scooters.

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Spaceangel
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Re: MY ELECTRIC BIKE IS NOT TAKING A CHARGE

I think I lost you? you said

If you kept the bike hooked up to the charger for a long time, the plates could be warped.

I always use a well regulated charger and I have dozens and mainly use my pack for Ham Radio, UPS, Inverters, scooters, tractors, and trucks. Every single one is plugged in 24/7 and some of my pack are old and I mean old. I did buy some "Jump Start batteries and fried a few good batteries after figuring out charger was "unregulated". Now on my jump start packs are always floating vs a stupid trickle charge. If the pack is up to float voltage and current is real low like on the order of a few pulses to milli-amperes then it can't hurt a good batter of the lead type. Most absorbed glass mat gel cell batteries have a thing that changes H2 into H2O again. Therefore plates always remain wet and ready to go. In 15 or 20 years I only have had 5 chargers die. I think because or heat and rain failures. I will not use a Lester type of charger that puts back in approximate AH and could then boil battery pack but most scooters use new three or four stage charging algorithm.
Most of the scooter riders here that I know of unplug their bikes after an over night charge. More power to them. I can get max range and max life on leaving them plugged in. The only exception is my VX-1 which will turn off and stay off.. So three weeks later and four or five bars down including the little bar at the top I plug it back in and top it off. Because of that scenario, my EST RANGE is 21 miles now. Maybe next week I will ride it again and see if I can do my real 25 to 35 mile range. It always used to say EST range 38 miles. But I haven't rode it since DEC 2010 some time. But then again that pack is NiMH type! Constant current terminating voltage and AH controlled. It never charges more than three hours in one bulk charge.

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Rusty

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