Top Of The Range Battery Chargers.

[mountainsport]

Hello to you all,

I know that we were on this topic a few days back and if you don't mind I would like to bring it up again.
Based on a 48v Lithium-ion battery pack plus a bit of your experience and knowledge, which is the best make or model charger to buy? We all know that the lower the charging rate @ 2-3 amp is best for the cells, but how about the chargers with additional switches that can charge your pack up to different levels for example 50% 75% & 100% is this also a very good feature?

Last but not least, would anyone buy a durable top of the range charger for the cost of over one hundred pounds or is that a ridiculous amount to pay for a charger? If any good ideas please pass it on.

MS.

 

[Deleted member 4366]

I wouldn't waste my money on anything like that. The charging rate should be about 0.2 times the number of aH unless you have special high-discharge cells that cab bear a higher charge rate.

There's so much rubbish published about battery charging and discharging that most people have no idea of the truth. Tilson's battery is still going after 5(?) years. Did he use a special charger or charging procedures. I don't think so.

You can get some nice chargers from BMSbattery that have adjustable current and voltage so that you can fine tune them to what you want, but you have to open them up to adjust them

 

[Alan Quay]

What would be a good idea is to have a safety timer on the charger, so you can connect it up, let it charge safe in the knowledge that it will cut off after n hours, charged or not.

That would save me the trouble of waking with a start at 03:00h and padding downstairs, semi naked to the garage to switch stuff off!

 

[mountainsport]

I wouldn't waste my money on anything like that. The charging rate should be about 0.2 times the number of aH unless you have special high-discharge cells that cab bear a higher charge rate.

There's so much rubbish published about battery charging and discharging that most people have no idea of the truth. Tilson's battery is still going after 5(?) years. Did he use a special charger or charging procedures. I don't think so.

You can get some nice chargers from BMSbattery that have adjustable current and voltage so that you can fine tune them to what you want, but you have to open them up to adjust them

Can you recommend a good quality charger Dave to use without opening it up and fiddling about and causing more problems. Cheers.

MS.

 

[Deleted member 4366]

Exactly which battery is it needed for?

 

[mountainsport]

Exactly which battery is it needed for?

Good question d8veh, I don't even know myself. Basically, I am gathering good tips and answers from you all knowledgeable people until it precisely falls into place. There is so much STUFF to take into consideration when setting up an ebike.

MS.

 

[Deleted member 4366]

There's so many different chargers that do different things depending on what battery have and whether you want it for normal charging or repairing, however, you don't need to make it complicated. the charger that comes with your battery or bike will be perfect. it's only when you want to do something special that you need a special charger. BMSBattery will set their chargers to whatever special parameters you want so that you don't have to adjust them yourself.

 

[mountainsport]

There's so many different chargers that do different things depending on what battery have and whether you want it for normal charging or repairing, however, you don't need to make it complicated. the charger that comes with your battery or bike will be perfect. it's only when you want to do something special that you need a special charger. BMSBattery will set their chargers to whatever special parameters you want so that you don't have to adjust them yourself.

Now d8veh, that is TOP OF THE RANGE ADVICE!
Cheers mate.

MS.

 

[cwah]

I very much agree with D8veh. Any normal normal lithium charger should be good enough. Actually, cheaper is almost always better because you want low charge rate.

I'm very happy with my 130W charger set up although I have a 1200wh battery ahah. I'm charging at about 0.1C rate. But I don't mind, I charge overnight.

I tested several cells, there is just one point I have to disagree with D8veh.. is that the standard charge level you buy from seller is quite bad for battery. If you don't precise anything you'll end up charging your battery at 4.2V/cell.

That's definitely not good if you want to keep your battery for more than few years... I tested some 18650 cells at home and depending on the end of charge you can definitely see higher capacity decrease if charged at 4.2V vs 4.1V after 50 cycles.