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13 votes
Accepted

Charging eBike Battery with Solar

A 100 watt solar panel is nominal watts under ideal situations. You'll be lucky to get 25 watts tied to the back of your bike - and this would be only for a few hours of the day, from 11a to 3p. Given ...
RoboKaren's user avatar
  • 29.2k
9 votes

Is it possible to charge an ebike from a 12V solar powered battery?

You can charge it, but you probably won't do as well as you think. You're on the right track but you're missing a couple of things: Solar panel ratings: These are optimistic and assume full sun ...
Chris H's user avatar
  • 59.9k
8 votes

Charging mobile phone using the battery of a rechargeable bike light?

Answer No, you need an item designed for this purpose. Whether yours do or not, it totally depends on the product. Many modern lights are charged by USB, but they can't supply USB to other devices....
Criggie's user avatar
  • 126k
5 votes

Is it possible to charge an ebike from a 12V solar powered battery?

An additional downside is electrical conversion losses. The solar panel will likely be putting out around 12V at some current, perhaps 5W for a 500 gram panel to 20W for a 2.5 kilogram panel. That's ...
Criggie's user avatar
  • 126k
5 votes

How do I find charging stations for an e-bike tour in France?

Open Street Map (OSM) has tags for EBike charging points. amenity = charging_station bike = yes Looks like this. Depending on your dexterity with OSM you may like to use Komoot which uses OSM data ...
Warren Burton's user avatar
4 votes

E-bike battery charger making horrible noises, only works certain outlets?

Even though the design may be CE compliant, the unfortunate reality is that cheap manufacturers will still leave out "unnecessary" circuit components or replace them with fake ones when actually ...
Affe's user avatar
  • 1,225
4 votes

Charging eBike Battery with Solar

Those are 48V batteries, which you want to charge with a 12V (nominal) solar panel. That's not going to work directly. So we look for an indirect solution. At the very least some form of boost ...
Chris H's user avatar
  • 59.9k
4 votes

Is it safe to charge my ebike lifepo4 battery this way?

LiFePO4 need 3.50V-3.65V/cell to fully charge - 28V-29.2 for 8 cells. Without getting to 28V, the cells will never be fully charged. Unlike lead acid batteries this will not harm the LiFePO4 (and may ...
mattnz's user avatar
  • 51k
3 votes

How do I find charging stations for an e-bike tour in France?

I'd recommend finding a bike lane with lots of traffic, and calling the restaurants along this bike lane. Ebikes are pretty common these days, so it is likely they already had customers ask for this ...
bobflux's user avatar
  • 1,784
3 votes

Charging eBike Battery with Solar

All great responses above, particularly regarding the true efficiency of charging the batteries via solar. In an ideal world, this would be so effin cool, to theoretically ride across the country ...
RideRunRow's user avatar
3 votes

E-Bike Battery not working

E-Bike was just 1 and a half year old The e-bike battery from bosch has 2 years warranty. The e-bike itself has just 1 year warranty. Battery was sent from a local store to bosch and I received a new ...
germstrom's user avatar
3 votes

Shimano STEPS E8000 battery won't charge

"The second problem is that im not sure if a new battery will work wihout pairing/programming. ... and will a new battery work (plug'n'play)?" Yes, no problem, I've used three different batteries on ...
Mick Carthey's user avatar
3 votes

Charging mobile phone using the battery of a rechargeable bike light?

Most lights are not designed for this, and it will not work. Anyhow, even if you had a light that this could work for, its not a great idea to get into the habit of. Why? Phones take a decent amount ...
Batman's user avatar
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2 votes
Accepted

Charging mobile phone using the battery of a rechargeable bike light?

To charge a phone you need exactly 5V, at least 0.5A but ideally 1A or more. Forget about USB lights. Their internal batteries are 3.7V which is hard to convert; they're also inaccessible. But many of ...
Chris H's user avatar
  • 59.9k
2 votes

Shimano STEPS E8000 battery won't charge

It looks like you might have bypassed the charge controller on the pack and charged the cells directly? The smarter pack controllers do a form of coulomb counting and will see anomalous or unexpected ...
RoboKaren's user avatar
  • 29.2k
2 votes
Accepted

E-Bike Battery not working

You should tell your friend ASAP that the bike is not charging. Ask if there is a trick to making it work. Your worst case is the battery has died, and you need to offer to contribute toward a new ...
Criggie's user avatar
  • 126k
1 vote

How do I find charging stations for an e-bike tour in France?

For Germany, I suggest you to have a look at this site: https://www.bettundbike.de/en/ You may find accomodation with restaurants, then you just need to plan your 2-3 hours stop to happen there. ...
EarlGrey's user avatar
  • 3,704
1 vote

Why do my USB charging ports fail?

Micro-USB connectors break rather easily if you attempt to pair them "upside down". Memorize the needed orientation of the charging cable. A partially broken socket may work with some ...
nightrider's user avatar
  • 7,879
1 vote

Why do my USB charging ports fail?

This really needs more investigation on your part to come up with the answer. Start eliminating possibilities and see if the symptom stays or moves away. Iterate on this and figure out the root ...
Criggie's user avatar
  • 126k
1 vote

E-bike battery charger making horrible noises, only works certain outlets?

I would think that the different outlets are just a red herring. The loud unhealthy noise that broken fans make is actually coming from the fan's bearings. In effect, that fan's axis is dancing around ...
cmaster - reinstate monica's user avatar
1 vote

E-bike battery charger making horrible noises, only works certain outlets?

It may be miswired plug. If the plug of the charger contains three terminals, it may be incorrectly wired, by swapping ground and neutral. This is a dangerous configuration to use that also may or may ...
nightrider's user avatar
  • 7,879
1 vote

E-bike battery charger making horrible noises, only works certain outlets?

That sounds just like a normal high speed fan in a charger to me. My charger has one and sounds like that when charging, stops when battery is charged even when still connected.
Graham's user avatar
  • 11
1 vote

Bosch 400Wh battery first led only is flashing and refuses to charge

When you discharge a lithium-ion battery all the way you can run into serious problems. If the battery is relatively new it may be under warranty and an exchange would be your best bet. The battery ...
Gary E's user avatar
  • 1,606
1 vote

Shimano STEPS E8000 battery won't charge

Are you sure all connections are clean between the battery and charger? I try to keep things clean and have been advised by my dealer ( Cooksons in Prestwitch). Recently neither of us could see a ...
Jackie Aspden's user avatar
1 vote

Shimano STEPS E8000 battery won't charge

I looked at the Shimano protocol and they put a challenge response between the bike and the battery in order to prevent replacing the cell. Looking at your picture, I see a white PCB in order to do ...
Nicolas's user avatar
  • 11
1 vote

Charging eBike Battery with Solar

My e-bike battery of 500 watt-hours lasts at 24 km/h around 120 kilometers. Thus, it lasts for 5 hours. This requires charging of 100 watts if I used solar panels to charge the batteries. I estimate ...
juhist's user avatar
  • 19.2k
1 vote

Charging mobile phone using the battery of a rechargeable bike light?

Yes, some models have the second USB A type port to provide power, using the charged lamp as battery pack. You can charge your phone or the red rear light, for instance. Google 'bike light USB power ...
nightrider's user avatar
  • 7,879
1 vote

Charging a Garmin Oregon GPS

Yes - I have done this using a SP PD-8 and a Sinewave Reactor . However, it's easier if you use the Reactor to charge a cache battery, and then charge the Garmin from that. This is because the ...
brendan's user avatar
  • 1,345

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