Issues with bike dying on a full charged battery

Madissons

New Member
Region
USA
This has happened twice in two weeks leaving me to push my Ecotrec Dolphin 1.5 miles up the hill to my home. I purchased the bike end of May 2021. The hill is super steep so the pedal assist is a great feature….. when it works. I’ve tried contacting Ecotrec without response from them so far. Any suggestions are welcome.
 

harryS

Well-Known Member
What happens? Does the bike just power off? If you reach down and flick the key switch, will it power up again?

You probably have the 810LED display and 36V? Does the battery display drop from 4 LED's down to none? Then it pops back to four when restarted?

I believe you need to determine whether this is the hill from hell that causes any ebike to stall, or if this is a battery with a weak bank of cells shutting down. That's described in the other thread entitled "Losing My Mind Trying to Figure this Out".

In fact, my Ecotric battery has started to do the same thing, after 2 two years. Not many miles on it, but I was tough on the battery. I was pulling 30 amps out of it, when the original controller only asked for 17A, Blowing fuses too. I've learned that kind of hard usage will cause cells to get unbalanced.

I also believe that if you can put together some video evidence to show Ecotric you have a faulty battery, that they will give you a warranty claim. If you ride along on flat surfaces, and give it a long pull on throttle, does it also shut down?
 

rich c

Well-Known Member
You fully charge it 1.5 miles from home? Sounds odd that it's fully charged when you hit that hill right before you get home.
 

Robspace1

Active Member
Region
USA
I had my Seagull die for no reason early this year. I had to ride about 1 mile home without power. It ain't easy! I tested the battery and it was totally dead and would not charge. No reading at all on meter. They sent me a new battery as well as a new controller, no problem. I did have to take a photo of the old battery with the volt meter hooked up and show the 0 reading. I think they skimp on batteries, and they are a known issue. Get a multimeter for $5.00 and test the voltage on that battery. If it reads less than what it should on full charge or if it reads nothing, then that's your problem. Also, check your battery fuse. If the fuse is good, (use the multimeter to check it too) and the battery is still dead, then it's the battery, and they will ship you a new one. You can toss out the old one. Also open the controller box and make sure all the wires are connected. Don't try super steep hills on hot days! Overheat the battery and it's toast. I never ride in temps over 90.
 

Attachments

  • MY BIKE 2.jpg
    MY BIKE 2.jpg
    791.1 KB · Views: 7

ElevenAD

Well-Known Member
I had my Seagull die for no reason early this year. I had to ride about 1 mile home without power. It ain't easy! I tested the battery and it was totally dead and would not charge. No reading at all on meter. They sent me a new battery as well as a new controller, no problem. I did have to take a photo of the old battery with the volt meter hooked up and show the 0 reading. I think they skimp on batteries, and they are a known issue. Get a multimeter for $5.00 and test the voltage on that battery. If it reads less than what it should on full charge or if it reads nothing, then that's your problem. Also, check your battery fuse. If the fuse is good, (use the multimeter to check it too) and the battery is still dead, then it's the battery, and they will ship you a new one. You can toss out the old one. Also open the controller box and make sure all the wires are connected. Don't try super steep hills on hot days! Overheat the battery and it's toast. I never ride in temps over 90.
If you send Ecotric the proper info they will do right by the customer, that said an Ecotric Dolphin is not cut out for climbing steep hills, its gonna over heat.
 

ElevenAD

Well-Known Member
I had my Seagull die for no reason early this year. I had to ride about 1 mile home without power. It ain't easy! I tested the battery and it was totally dead and would not charge. No reading at all on meter. They sent me a new battery as well as a new controller, no problem. I did have to take a photo of the old battery with the volt meter hooked up and show the 0 reading. I think they skimp on batteries, and they are a known issue. Get a multimeter for $5.00 and test the voltage on that battery. If it reads less than what it should on full charge or if it reads nothing, then that's your problem. Also, check your battery fuse. If the fuse is good, (use the multimeter to check it too) and the battery is still dead, then it's the battery, and they will ship you a new one. You can toss out the old one. Also open the controller box and make sure all the wires are connected. Don't try super steep hills on hot days! Overheat the battery and it's toast. I never ride in temps over 90.
I will always have a soft spot for those bikes! They used to make an Orange one that i still would love to own.
 

Robspace1

Active Member
Region
USA
I'm just sorry I threw away my original battery. Ecotric sent me a new one but I should have had the old one repaired by these guys for about half the price of a new one. Then I would have a backup.