Sla to lithium conversion for electric scooter

[KirstinS]

I've got an old electric push scooter , 120w brushed motor

I've replaced the dead sla with a 22.2v lithium pack but it seems sluggish

Any ideas ? I've even tested with my Lipo bricks and still same. Was faster with 24v sla

Any ideas ?

Btw I know they are illegal on pavements etc... But my dad uses them to get around marinas when on his boat. The marina are happy

 

[Deleted member 4366]

How many amps does the controller allow and how many can the battery give?

 

[KirstinS]

Good question! I'm using Panasonic cells from an 8fun battery- they are a shade over 2000mah each. ( 6s 3p so 22.2v and 6ah ish)

I did think maybe duff cells but tested that pack against 2 different Lipo multi star bricks (22.2v 5.2ah ) which should cope with any likley required c rating? At least I thought so

The controller has no clues on the outside either

 

[Deleted member 4366]

I doubt that the 18650s could give enough power, but the lipos should be OK.

 

[KirstinS]

I doubt that the 18650s could give enough power, but the lipos should be OK.

Cheers, mystery then

Never mind, it works fine for my dad.