Hi. I've been offered a QDos Infusion folding commuter from someone who bought it with good intentions but never used it.

 

Good points:

It's still in the wrapping, battery still has charge, keys are still zip-tied onto the handlebars from the factory.

It has a back light (but I can't find a way to turn it on from the controller).

 

Doubltful bits :

Bike has been standing unused indoors for about 2 years since it got unpacked.

Battery is a puny 24v/7Ah, assume front motor is legal 250W, cable rim brakes, low spec Shimano 6 speed. Not the spec I'd hope for but that's what it is.

Assume battery isn't 100% - but will it still be usable?

I'm a tall chap and the bike is a folding "universal / medium" commuter with 20" rims - it feels like a toy.

The charger & instruction manual are somewhere on the house but haven't been found yet; I saw them when the bike was new but things have been moved since..

Controller is super basic with 3 power levels.

This is a spare bike to use as emergency transport, it won't be getting money spent on upgrades or upgraded / 36V batteries...

Both tyres are flat, it has no tyre pump or lock (and I'm away from home so need to buy or borrow both before I can ride it)

 

Main reasons I'm tempted : it's here, it's (hopefully) cheap or free, my car is off the road for a few weeks, and I'd like to visit a mate (possibly 20 mile round trip, possibly stay the night & recharge the battery before the return trip).

 

Questions

Does anyoine have any experience with these or know where I can find a manual?

How does the back light turn on?

How do I value this? I suspect the owner paid top price, she is a friend so if she thinks it's worth hundreds I'll leave it rather than upset the friendship... as a freebie it could be usefuil

 

I'll get photos in daylight but it looks like this Qdos Infusion was also sold as an Elife Infusion ( I found an old advert with an identical bike - photos..)

https://www.pedelecs.co.uk/forum/classifieds/for-sale-2-elife-infusion-folding-ebikes-%E2%80%93-light-use-outdoor-stored-restoration-friendly-dl14.434/

 

many thanks

Just found a sales ad with photos etc (out of stock .. obsolete?)

https://www.ebikes.co.uk/qdos-black-electric-bike

 

That has a link to an online manual

https://www.ebikes.co.uk/mpattachment/file/download/id/5/

 

A shame the bike I'm looking at has back light at the bottom of the back mudguard, the one in the link has no back light - so instructions don't explain how to turn it on

Battery, 2 years left partially charged, don't know. If it was empty and left for 2 years I think it would be unrecoverable, but as it was probably 30-50 % charged I'm thinking you might be lucky

 

24*7= 168 Wh. That should do 10 miles if you can charge at the other end. Yeah I'm 6'3" and 16 stone and I'm fine with a dahon clone 20" wheel folder with rim brakes , have done 30 miles journeys on it.

 

Price, I wouldn't really want to spend much more than £100 although nearly new ones on Facebook market place seem to be advertised for £200-300 - whether they sell at that price is a question

 

 

The rear light will probably be a long press on the + or - button

 

(I wouldn't be able to resist upgrading it to 36v, probably could get a 36 v 10Ah battery for £90 from pswpower and somebody here has probably got a controller you could use)

Edited October 1, 2025Oct 1 by Peter.Bridge

That's basically the same as the one I got from Argos returns for £100, but with a different frame. The power is very low and so is the gearing. It'll work OK as long as you don't mind going slow and not too far. I modified mine with a 36v battery and controller, which gives it 50% more power and range and much better pedal assist. Your one's pedal assist is basically on or off. You can't adjust the power. Only the assistance cut-off speed is adjustable.

 

Your electrical system is very common on all those cheap catalogue bikes. The LED control panel is almost impossible to get if anything goes wrong with it, though I now have the complete electrical system spare. Some have front motors and some have rear ones.

 

Your light is probably an AA battery one. There will be some button to press on it somewhere or you sort of press the whole lens or something like that.

 

If you need to know something about the bike, just ask. Photos always help if it's something specific.

My daughters got one and loves it she gets 15mile on the lowest setting but she is only 7stone. I just picked a 2nd battery yesterday for 25quid. I did some searching and managed to find a pdf manual for it. Be careful the charger gets hot i place a small fan over it when charging

elife.pdf