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I doubt one will be able to return it, one will need to contact the company in question first.

Some battery leads may be Black for B- or Red for B+, some one may not be able to see the wire colour so the pin out is marked simply - or +. For polarity one needs a meter, set the meter to 200v on the DC scale. The meter probes are colour cordinated Red + & Black -, if you get a voltage...

Take no notice of the motor wattage for the battery, what matters is it is of the correct voltage. It has a max continuous 20a working current rating so will work with any bike with up to a 20a controller rating that bike can be 250, 350 or 500w.

I think you paid approx. £90 for the liitokala, we said at the time it will be fake or poor cells used. It may be the cheap electronics used otherwise known as the bms, pay cheap pay twice. My next battery build is a simple 12s 2p build with 21700 cells, 24 of them are £106 on there own and are...

Spending another £200 on a battery doesn't mean you will get £200 for the bike when working so it is either cut your losses now or attempt to opene the battery to repair it. You have thus far learnt and managed to carry out work you never dreamed of before , the battery is a piece of cake to...

Cycle helmets fly traps are not impact safety devices, they may protect your bonce from a low flying branch or if one takes a low speed tumble but in any major collision they will be next to useless. If I where a helmet it is a young dudes ski/snowboard helmet but 99.5% of the time I wear a...

I have already mentioned 49.7v is an average of 3.82v per cell if they are balanced, however I expect you may have a low cell group so the charger will remain green and the bms won't switch to allow the current to flow. We did warn you about the liitokala being cheap and suspect when you bought...

Which C5 setting are you using to limit current ?

It is the grinding noise one has said has occurred since the rattiling nosie was noticed. If folowing one bike or riding your bike can you see any wheel movement at all, however small ?

Ruling out spokes one can do by plucking them, hopefully they give off a nice taut ping rather then dull dmap squib of a ping.

Only UK users and the US are fixated on wanting mopeds with throttles or twist and go, it is this reason one should have brake sensors fitted if one is also fitted. I no longer fit throttles as I never use the damn things, so sensors for brakes aren't needed.

One reason why I check my chargers before connecting for charging, two seconds to make sure output voltage is as it should be.

The BMS has likely fried then, it is battery specific depending on voltage and certainly won't handle the higher voltage not intended to be seen. The bms will use a voltage regulator or mosfets for switching so these and other pcb parts may be damaged. It is a warranty claim. The hub should be...

If the noise has gone from rattling to grinding then best not to ride them any more until the issue is sorted. Is there any play in the wheel laterally ?

Mostly it is diy, though Woosh bikes may take on repair work. Ebike shops in general don't have the knowledge to repair hub bikes, that's why they stick to expensive mid drives as they simply are spanner merchants who swap new motors for old. The PC tells them the fault and then they claim...

In the main it is nonsense, for the day rambler with a bosh bike they will be of no use except may be locals who want a free charge and can sit about waitng so. They might be of use to some touring cyclists but again they will have made sure their needs are already catered for. If a serious...

No reason one shouldn't get similar usage, if they are cared for corrrectly. Not forgetting if one could get a new freego battery, one would likely be looking at twice the price. One expects the sub £200 silverfish batteries use cheaper china cells, but that doesn't mean they won't give good...

I think you have to start with the PAS and check it a stand whilst rotating the cranks. Ensure the disc is 100% secure on the BB axle and it is even/parallel to the sensor during rotation.

Warp speed Mr Sulu.

He did that years ago for his sins.