Questions tagged [battery]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
3 votes
1 answer
52 views

Is it safe to use 4A charger on a 2A Battery

My Ebike uses a 48v battery, but the charging amperage listed on the side is 2A, and the original charger likewise is 2A. Having lost that charger, the replacement I could get on short notice is a 4A ...
user avatar
  • 33
9 votes
1 answer
212 views

Has anyone successfully changed the battery in a Knog Blinder Mini Dot?

I have a pair of Knog Blinder Mini Dots which were left with their non-user-replaceable LiPo batteries flat over winter and now won’t take a meaningful charge. I’m handy with a soldering iron but less ...
user avatar
0 votes
0 answers
106 views

Specialized Turbo “LO BAT” error with torque loss

My Specialized Turbo has started showing momentary (5 second) “LO BAT” errors on the display, and at the same time the motor switches from torque to a stuttering high drag condition. This only ...
user avatar
2 votes
2 answers
112 views

Is it safer to remove a battery from an ebike before charging it?

It is possible for me to remove the battery of my ebike and I am wondering if it is safer to do that before charging it. Could there be a potential damage to the electric motor while charging a ...
user avatar
  • 21
2 votes
3 answers
400 views

Why are there no/very-few bicycle-specific lights with replaceable 18650 Li-Ion batteries?

Most (higher end) battery-powered bicycle lights have built-in Li-Ion battery or a battery pack nowadays. There seem to be no front lights using replaceable 18650 cells. Rear lights with replaceable ...
user avatar
1 vote
2 answers
256 views

E-Bike Battery not working

I have borrowed an e-bike from a friend few days ago. Yesterday battery was empty so I left it to charge last night. I left it overnight. Now when I put it in bike it does not work, not responding. I ...
user avatar
1 vote
1 answer
505 views

eBike: use 48v motor with 36v controller and battery

On one DIY eBike I currently have a 36v 250w rear hub kit. It's a "cassette" version, not "freewheel". Problem is, the internal freewheel mecanism of the wheel is very damaged (...
user avatar
2 votes
2 answers
193 views

Is it normal that the pedalling assistance gets significantly less on an e-bike with low battery?

I recently bought my first e-bike (Coboc Montreal Seven), which is advertised to have a ‘natural riding feeling’ by measuring torque sensor signals and translating them to the ‘right’ amount of ...
user avatar
  • 41
13 votes
6 answers
3k views

Should I buy a spare integrated battery with my new ebike even though I only plan to use it in years while keeping it at 60% charge over that time?

I just bought a Priority Current ebike that has a battery integrated in the frame. The main disadvantage of this is that there is not third-party version of this battery, a replacement can only be ...
user avatar
  • 139
2 votes
2 answers
177 views

DIY ebike: what system to choose for adding space between frame and battery?

So, the project is to install this 5kg battery: on this bike: This is no joke. I'm serious. Following up to this previous question, I'm going to use steel rivnuts (aluminium is really too light for ...
user avatar
2 votes
1 answer
576 views

Blind rivet nuts for ebike battery on frame: aluminium or steel?

I'm planning my first installation of an ebike battery by drilling/riveting the frame (photo of the battery below), here are some details about the project: The battery weights about 5 kg. It's a ...
user avatar
0 votes
0 answers
136 views

Bosch 500w battery stopped charging [duplicate]

Charger works as I have a second battery and it charges. The 500 watt battery displays a partial charge but does not charge and does not power bike. I have done multiple resets without success. It ...
user avatar
0 votes
0 answers
26 views

Windgo ebike charging problems

Hi I've been asked to try and repair a friends Windgo ebike problem is with the battery/power it's a new bike yet is not turning on. Also the battery shows the illuminated Red light always and doesn't ...
user avatar
0 votes
0 answers
91 views

Why fit a usb on my ebike battery when not even connected

Id like to ask if anyone else has a viking gravity ebike with a internal frame battery pack which has a usb port included. Thing is i found out that it wasn't working even though its a brand new ...
user avatar
0 votes
1 answer
218 views

Best solution for additional (dual) battery for E-bike

I've marked a few possible places for additional battery mount. What do you think is the most reliable place to mount battery in terms of ergonomics of the bike? Also, how to ensure the parts are ...
user avatar
11 votes
2 answers
3k views

Fortified Bicycle appears to gone out of business -- where to get one of their replacement bike light batteries?

One of the two rechargeable batteries that go with my Fortified Bicycle's lights appears to have started to die permanently. (The other remains in good condition.) I have looked through eBay and found ...
user avatar
  • 111
1 vote
1 answer
185 views

What type of ebike motor would work best for a 13” tire?

I want to drive a yard cart with a motor / battery. The cart has 13” wheels and weighs ~200 pounds loaded. I want to walk behind it, so I’ll need to be able to control the speed between 1-3 mph. ...
user avatar
-5 votes
2 answers
320 views

Wind (nano-/pico-)turbines installed on bicycles for regenerative charging of batteries?

What is the smallest wind turbine available on the market that has been installed on a bicycle? and what about R&D or even conceptual wind turbine? This question is a follow up to question why are ...
user avatar
  • 3,156
6 votes
3 answers
4k views

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

I would like to use an electric bike while doing wild camping with my camper van. So I won't have a 220v source for days, possible weeks at a time. I am wondering if I could add a battery in my camper,...
user avatar
0 votes
0 answers
827 views

Bosch battery not charging

Bosch 400 battery pack, that I have not used for a long time. The lights are not lighting, tried to reset and got nothing.
user avatar
1 vote
0 answers
345 views

Shimano 8000 Battery Reverse Engineering

I am on a mission to reverse-engineer the Shimano 8000 battery, with the purpose being to allow Shimano 8000 batteries to be used with a non-Shimano controller. The reason is to have two motors on my ...
user avatar
0 votes
1 answer
2k views

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

I had posted on endless sphere but since then I have possibly made a little discovery. Tldr; I have a fresh 48v battery and charger around less than 3 months old. Very intermittently when trying to ...
user avatar
2 votes
3 answers
171 views

eBike winter battery power

My Bosch eBike has dual batteries which I usually ride with one battery. I feel like as the weather drops to freezing the bike power has dropped off slightly and when I ride with the second battery ...
user avatar
0 votes
1 answer
127 views

Replacement battery for Cygolite Milion light?

I have a Cygolite Milion 200 light purchased in 2010. Its battery is taking a long while to charge these days. I wrote to Cygolite, and they say they don't have a replacement battery for it. The ...
user avatar
5 votes
2 answers
1k views

E-Bikes - Is it bad for the bike to run out of battery?

Today, I ran my e-bike out of battery for the first time. Interestingly enough, the bike didn't actually turn off, but automatically moved the mode from "Eco" (light pedal assist) to "Off" (no pedal ...
user avatar
0 votes
2 answers
2k views

KNOG BLINDER ARC 5.5 battery replacement

Can anyone please tell me how I would go about changing the battery over in my light please!!! I have so far taken off the lens cover and have undone the 3 x 1.5mm Allen screws to release the outer ...
user avatar
5 votes
3 answers
2k views

To what extent should I insulate an electric bike battery during winter?

For temperatures between 0 F (-18 C) and 32 F (0 C), to what extent, if at all, should I insulate electric bicycle batteries? I have read that they do not like temperature extremes. Should I wrap a ...
user avatar
  • 485
3 votes
2 answers
574 views

How can I troubleshoot battery issues on an electric bike?

I've got an electric bike with a GWA Easi-A36 battery (10.8Ah, 33.8V). The bike has a GWA electric motor. When I turn the motor on (on the handlebar "computer"), the battery indicator tells me the ...
user avatar
  • 131
-1 votes
1 answer
58 views

Bike kit needs battery , need help choosing a battery and confused by specs

I have a 48v 1000 Watt rear hub kit, with a multifunction LCD display. Voltage:dc48v,Current:28A Booster1:1,speed set 1:1-42v/dual mode, brakes : low level. Now I'm unsure what battery to get. Can ...
user avatar
  • 1
5 votes
1 answer
2k views

How often should I charge my (lithium) e-bike battery?

I had a retrofitted e-bike running a Leed e-bike kit for 4 years. After 800 charge cycles the battery was toast. However this system is quite basic with both the battery management & charger. I ...
user avatar
2 votes
2 answers
3k views

Ancheer electric mountain bike cuts out under load

My year-old 250W Ancheer electric mountain bike currently has an issue. When going up hills, the motor is put under a lot of load and the battery turns off. It remains off until reset by toggling the ...
user avatar
  • 123
0 votes
1 answer
3k views

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

On a long trip with a lot of wind my 400Wh battery went empty.When i tried to charge it at home it refuses to charge. The first of the five leds is flashing. Strange because in the manual is written 1,...
user avatar
2 votes
3 answers
450 views

Cons of using an infrequent use long range e-bike battery trailer using SLAs

So I've recently purchased an ebike and started thinking about how I could go long distances without charging. It occurred to me that whilst sealed lead acid batteries can't go through many cycles, ...
user avatar
  • 1,210
2 votes
4 answers
8k views

Shimano STEPS E8000 battery won't charge [closed]

I have a STEPS E8000 bike and wanted to make some improvements, like possibility to charge from any kind of CC/CV charger (even using solar panels when grid is not available) and to charge it to 41v ...
user avatar
7 votes
2 answers
22k views

Bosch battery stopped charging

It is a Bosch powerpack 500 and the other day it stopped charging. The charger seems to have some output since one of the LEDs on the battery lights up. It is only one LED though and I believe I ...
user avatar
  • 305
3 votes
1 answer
156 views

What is this ... electrical bike's setup? Is there a particular brand or model name for this? how to replace its battery?

Just bought it from someone, interested to get it fixed. he said it just needs to replace battery, I doubt it (after numerous experience with asking the sellers "what is wrong with the bike" and ends ...
user avatar
  • 183
2 votes
3 answers
1k views

Shimano Steps E6000 battery charge percentage falls abruptly

When the battery charge gets to about 20-25% it drops abruptly to 5-10%. The steeper the hill and higher the load drop percentage is higher. Examples: from 25% to 6% steep hill from 13% to 8% small ...
user avatar
  • 23
9 votes
5 answers
7k views

Charging eBike Battery with Solar

I need some advice / info on solar charging an eBike battery. We have two RadRovers from Rad Power Bikes. They are powered with a Panasonic Dolphin 48V, 11.6Ah Lithium-Ion battery https://www....
user avatar
  • 193
1 vote
0 answers
191 views

Central axis motor or wheel motor for conversion to electric bike? [duplicate]

I'm planning to convert my "mechanical" bike into an E-bike for riding long distances to work, and I would like to buy only the motor kit since I already have the bike. I can see that I have two ...
user avatar
  • 131
4 votes
3 answers
1k views

Bicycle computers with nonvolatile memory

The one thing that keeps me from pulling the trigger on some bike computer is the lack of information about the odometer, the lifetime mileage on the bicycle. When you change the battery in your car, ...
user avatar
3 votes
1 answer
230 views

Charging a Garmin Oregon GPS

Does anyone know if you can charge a Garmin Oregon GPS from a bicycle hub dynamo with the optional rechargeable batteries? Thanks Karl.
user avatar
7 votes
3 answers
4k views

Why doesn't my (battery-powered) light work in the cold?

I've got a cheap LED lamp running on three AAA NiMH batteries which stops working when exposed to near-freezing temperatures; is there a likely reason for this? The lamp has been dropped a number of ...
user avatar
3 votes
1 answer
1k views

Will the Garmin Edge Touring store an in progress ride if power is lost?

A rider is on a long ride, using a Garmin Edge Touring GPS unit and takes a break. If they wish to save battery on the Garmin, can they power it off and continue the same ride later? I believe the ...
user avatar
  • 155
1 vote
1 answer
145 views

E-bike battery doesn't work anymore, where do I get this specific one? [closed]

Can somebody tell me exactly what battery this is or where I can buy it? I appreciate any help a lot! If you need more information, please let me know. Edit: This is the e-bike the battery used to. ...
user avatar
  • 111
20 votes
7 answers
13k views

Protecting bike attachments such as lights against theft

I was wondering what one could do to keep his bike attachments from being stolen. On Monday two lights were stolen off of my bike. I only had them for a day. It was the kind that has a rubber "strap" ...
user avatar
  • 347
3 votes
4 answers
2k views

Can I secure a 12v battery to my bicycle to charge it? And then attach a 12v horn to it?

I'm from the Netherlands, so I mean a Dutch style bicycle, as in: Then I want to attach a 12 volt horn to it. I could just put it in the basket. It doesn't necessarily need to be charged while ...
user avatar
4 votes
1 answer
114 views

How to use Garmin's battery more effectively?

I've bought a second hand Garmin Edge 800 for a while ago. So far, I'm nothing but delighted about the device and the battery life. However, since I have to plug it in in order to upload my rides, it ...
user avatar
  • 153
3 votes
1 answer
1k views

Is the XTR Di2 battery compatible with Ultegra Di2?

I'm considering installing an Ultegra Di2 groupset on a small road bike. The space below the water bottle bosses is too little to install the regular road Di2 battery, but the XTR SM-BTC1 Di2 battery ...
user avatar
  • 2,133
1 vote
1 answer
915 views

Cygolite Expilion Battery Replacement

Did anyone take apart the replaceable battery of the Expilion headlight? I assume it contains a 18650 like battery, but some have a protection circuit built in and some not. Any knowledge about the ...
user avatar
  • 21
10 votes
5 answers
8k views

Can I replace my bicycle's dynamo with batteries?

I have a working lightning system on my bike with wired front and rear lights, powered by a dynamo. The dynamo's plastic has broken and I have repaired it several times now, but now it is FUBAR. ...
user avatar
  • 1,209