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HomeOff Topics › 12v scooter Li-po conversions
07-30-2018 01:55 PM  19 days agoPost 1
Richardmid1

rrProfessor

Leeds, England

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I'm about to convert a 12v scooter to 3s Li-po but wondered if the internals could handle 4s Li-po? A fully charged 12v Pb battery can be 14-14.5v and I realize a fully charged 4s Li-po can be upto 16.8v but I wondered how much voltage 'overhead' the components are designed to take?

60% of the time, it works every time!

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08-02-2018 05:55 AM  17 days agoPost 2
gologo

rrKey Veteran

Sedalia, Mo USA

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Same here, kinda. Have a grass trimmer that the original battery pretty much just gave up. Converted it to 3s, and has done great for years now.

But the last year or so, been sticking in 4s 4000s occasionally. Love the power, but only do short bursts at a time, so as not to push my luck. So far, it has been fine.

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08-02-2018 11:29 AM  16 days agoPost 3
Richardmid1

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Leeds, England

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I did the same with an 18v grass trimmer, I use 5s 8000mah packs, lasts about 5x longer than the original batteries and much more power!

They don't have any speed control though, they are just on or off so as long as the motor can handle the extra power it's fine.

I opened up the speed controller in the scooter and there is what looks like a relay that says 14v 15A on it so I guess it won't handle 4s lipo, or not for very long at least.

There is a 'shunt mod' that people are doing to these electric scooters and ebikes, the 'shunt' detects voltage drop between the terminals on the board and limits the current to stop overloading the controller and motor (I think) and people are adding extra solder or wire so there is less voltage drop and you get more torque. The only down side is it will pull more current so range will be less. I looked on the board on the controller but can't see anything that resembles this 'shunt'. Oh well.

60% of the time, it works every time!

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08-03-2018 04:55 PM  15 days agoPost 4
utahbob

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St. George Utah

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I been thinkin about switching my Cherry 2000 over to 12s power...Da.Da.tcsh!..couldn't resist..sorry.

I do a great decending funnel!

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08-06-2018 02:39 PM  12 days agoPost 5
Richardmid1

rrProfessor

Leeds, England

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utahbob
I been thinkin about switching my Cherry 2000 over to 12s power...Da.Da.tcsh!..couldn't resist..sorry.
...and a faster charger?!

60% of the time, it works every time!

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