Levo Gen 2 Turbo Levo charger ratio ?

[Nakiri]

Hi there,

I read somewere here that the Shimano charger has different charging time ratios according to the charging percentual (0-80% and 80-100%)
I was wondering if the SPZ charger has the same feature, or is it the same ratio from 0 to 100% ?

Anyone knows/already tested it ?


Thanks !

 

[salko]

Yes, last ~20% are changing much slower....

 

[Nakiri]

I just found a post with your comments...

Levo battery charging times

Notice battery charges quicker up to say 80 percent then slows down .Curious if anyone has timed how quick to certain level for example does rate slow charging at certain level. Just in case decide to do long run and top up at a shop etc .

www.emtbforums.com

But I would like to know these ratios... in percentage, A/h, whatever.So I can finish my project... hehehe


Thanks !!!!

 

[Mikerb]

I just found a post with your comments...

Levo battery charging times

Notice battery charges quicker up to say 80 percent then slows down .Curious if anyone has timed how quick to certain level for example does rate slow charging at certain level. Just in case decide to do long run and top up at a shop etc .

www.emtbforums.com

But I would like to know these ratios... in percentage, A/h, whatever.So I can finish my project... hehehe


Thanks !!!!

I doubt it is exact because it will depend on how previous charging has been done........ie always charged to 100% or mostly charged to 90% ( which is preferable). In the final stages of charging the charger equalises each cells voltage which is why the final stage of charging takes longer.

 

[Nakiri]

I doubt it is exact because it will depend on how previous charging has been done........ie always charged to 100% or mostly charged to 90% ( which is preferable). In the final stages of charging the charger equalises each cells voltage which is why the final stage of charging takes longer.

Shimano states in the EC-6002 charger manual:
7.5h - Full charge
4.0h - until 80%
So, it takes 3.5h from 80% to full charge
Then... 1h = 20% charge (up to 80%), then 1h = 8.57% (80-100%)


I'm looking for something like this for SPZ charger. If no one knows, I'll have to take some measurements myself (boring)...

 

[dobbyhasfriends]

I just found a post with your comments...

Levo battery charging times

Notice battery charges quicker up to say 80 percent then slows down .Curious if anyone has timed how quick to certain level for example does rate slow charging at certain level. Just in case decide to do long run and top up at a shop etc .

www.emtbforums.com

But I would like to know these ratios... in percentage, A/h, whatever.So I can finish my project... hehehe


Thanks !!!!

monitor the current input over the duration of a full charge.
job done.

 

[Aussie78]

Gen1 used AN49511A battery management ic.

Balancing on charge only. Not a charge pump active balancer. Balancing tolerance window is not adjustable, or threshold adjustable. Very basic. Only balances above 4.12v I believe, so terminating pack charge at less then 42v will not let AN49511A perform balancing. Cells in packs I have had apart have had wildly miss matched cells, as witnessed with internal impedances all over the shop in packs with <50 cycles, resulting in significant pack unbalanced during discharge and capacities in the 300-350Wh range.

Charge profile looks like attached image