eZip electric scooter upgrade mod to LiPo batteries with new one plug dual battery charging.

[@olingerscreations]

I make his and her toys for my wife and I all the time! Soon my son will be able to get his own built toys to keep up

[@JohnYoung-b4f]

I am changing the batteries in my Ezip 750. I like your system and I have one question. Since the two batteries are wired in series, and according to your diagram they stay in series while chargine, how can that work? It seems to me that the charger for one battery is putting a + current on the + terminal of that battery and the - current on the negative terminal of that battery, but because of the series wire between the + terminal of one battery and the - terminal of the other battery, that a short will be occurring. So how will it work?

[@DavidWeidner10]

Been a while since I looked...but I think I remember....that when the power switch is off...the series connection is broken. Then charging is from each charger to each battery.

[@JohnYoung-b4f]

@@DavidWeidner10 Mine is not made that way. There is just a 12 gauge wire that puts the two bateries in series and it does not go through the on-off switch. I found a wiring diagram on the internet but it only shows a spst switch for on-off. The on-off switch in mine is a dpst switch. I would like to know what the other wires are.

[@DavidWeidner10]

@@JohnYoung-b4f I read my comment and I think I misspoke. The chicken scratch diagram in the video at 28seconds in shows what I did. This is all part of the battery pack...I didn't do anything with the switch. My thinking was....since the switch for the scooter breaks the positive 24v into the speed controller....that as long as the switch is OFF....you can charge both lithium batteries independently with the 4 pin plug wired as shown. (Two 14.2V lipo chargers) So yes....they are still in series....but the overall circuit is not connected when the scooter switch is off. If you left the switch on and plugged in you might have a problem.

[@JohnYoung-b4f]

@@DavidWeidner10 Thanks for your reply. I raised a question above about the switch being dpst but the diagram shows a spst. After taking the switch out, I see while it is a dpst, they are using both poles for the same wire. I presume the stitch was not rated for high enough amps so they used both poles to get the need amperage rating.

[@JohnYoung-b4f]

Thanks for your video. I modified my 750 using your diagram with one change. I put a toggle switch on the wire connecting the batteries in series. To charge each battery separately, I turn that switch off, taking the batteries out of series for the duration of the charge. When the batteries are fully charged, I disconnect the charger and turn that toggle switch on putting the batteries back in series for the operation of the scooter.

[@Jestr86]

i'm looking to upgrade mine sicne i can only get 2 miles on full charge.. what e zip scooters are those ? those tires are skinnier than mine i would like those better..

[@DavidWeidner10]

they are ezip scooters.

[@Jestr86]

@@DavidWeidner10 i know that much, i meant model .. mines ezip 450 tires are smaller and fatter like a go kart.

[@DavidWeidner10]

Oh...well...maybe these are older? 500 and 650. I thought all the tires were the same, but I didn't really pay attention to that.

[@Jestr86]

@@DavidWeidner10 hmm.. i wonder if i can make mine like that.. it was free so i cant complain.. i'm new to the scooter scene..

[@DJHeroMasta]

😎 Sweet mods man! I'm in the process of motor swapping my currie I-zip 500. I was gifted a 72V, 3000W motor from Vevor along with a matching speed controller (also from Vevor). Based off of other builds I've been looking at over the past few weeks (scooters and ebikes), I've concluded that this motor is too much for this scooter (price and total unsprung weight wise). The battery that I would need to power this system is to much of an investment that I'm not in a need for at the moment. I feel like this motor/ESC combo would be perfect for an off road bike or a go kart. But again, I'm not building one of those just yet. I still have the stock 500W motor and it's OEM controller. Do you think I should just re-install the factory motor, upgrade the ESC, and over volt to 48V? I would like to cruise at speeds higher than it's rated 15mph. 30mph would be great for me. I currently weigh around 170lbs. Also, the aftermarket battery I have on hand at the moment is a brand new "80V" 72V battery that was meant to be used with a lawn mower. Here it is: Power Tool Battery - Li-ion 72V (80V max) 6.0Ah, 432Wh GW8060. I'm assuming the 432 is watt hours? Meaning if I used this to power the 500W motor (which I'm not as that motor's rated at 24V) theoretically, I'd be getting a run time less than an hour? But if the battery read "1000wh", would that mean I could get around ~2hrs of run time?

[@DavidWeidner10]

Thanks for the comments and questions. You have a lot of ideas going on. I wouldn't recommend ugrading esc and using stock motor then over volting it to get more speed. The only way you get that speed is making the motor spin faster which that motor isn't designed to do. I know people have done it. Honestly....what I did for speed...is got a used UberScoot 48v 1500 watt scooter that someone had on facebook marketplace cheap because the lead acid batteries had died. I just replaced the batteries with a 48v 20Ah lipo. Everything else stock...It'll do over 30mph. You just cant use the old charger....but the battery came with a lipo charger. This scooter also has suspension. It's the cheapest way to get a fast lipo scooter. Good luck with your projects. Thanks for watching!

[@DavidWeidner10]

Oh...forgot to mention....I have used some commercial lipo batteries of the wrong voltage to run stuff. You just need to get a voltage reduction circuit. These are cheap on Amazon. They could drop that 72v battery to 48v efficiently for example. Just make sure that the amperage rating of the circuit can handle your needs.

[@DJHeroMasta]

@@DavidWeidner10 Mmm! And I was wondering if I could do something of those sorts! Cool, so keep the stock motor and ESC and step down the the voltage on the battery via a voltage regulator? Will have to figure out the amperage, that'd be based off of the battery though right? In my case, 6ah? Is that the discharge rate for this battery? I'll look more into it later. Thanks sir! I'll be back later to check out more of your videos too. 👋🏾

[@DavidWeidner10]

@@DJHeroMasta The rating would be the max the motor and controller combo need. Not the battery. The easy guess is just use the value of whatever fuse comes with the scooter. If it's a 30amp fuse....get the 30amp rated voltage regulator circuit. Here is an example of what I used. www.amazon.com/MGGi-Converter-Waterproof-High-Power-Transformer/dp/B09KB63CL7/ref=sr_1_7?crid=3NNTC88J3A0Z1&keywords=72v%2Bto%2B24v%2Bstep%2Bdown%2B30%2Bamp&qid=1677602054&s=electronics&sprefix=72v%2Bto%2B24v%2Bstep%2Bdown%2B30amp%2Celectronics%2C200&sr=1-7&th=1

[@justjoshinya8309]

Those are not lipo batteries