#EZIP 750 BATTERY FULL#

I hate to sound like an ad for hobby king, but they have a balancing meter (CellMeter 7) that you could leave plugged into the pack if you wanted. It’s only when it gets too depleted that I NEED to re-balance it. What I’ve noticed about my 7s pack, is that it stays in balance quite well usually. B-) Plus, I’d have to bring a power screwdriver for all those screws. (is that too informal?) I would like to be able to take my charger with me so I can go to the mall that’s about 5 klicks away (Full range for my setup), but I’m afraid that if someone saw the deck off the scooter, a rats nest of colored wires going into a metal box with incomprehensible text on a lighted display and a “Black box” plugged into the mains, they just might call the bomb squad. HobbyKing has 6600 mAh and higher packs too. I’m going to do the current limit hack if I can, when I get some new batteries. The first pack laster for two years before It was unusable even to go to the store and back (about a kilometer). The performance didn’t change much, but the first thing I noticed was that it was easier to carry the scooter up stairs or onto a bus, and that the range was the same as the 9Ah GellCells. You don’t have to do that part, but it’s sooo Cool. I use an Accucell 8 Lipo ballance charger and hacked it to transmit battery info to LogView running on my lapTop. There is plenty of room for two of these batteries in parallel in the tub. I also used an expanded scale voltmeter as a gas gauge to measure the top 7 volts of the battery pack so I would know when I was half way and had to head home. I put XT60 power connectors on the pack and speed controller (Good to 60 Amps). The pack I chose was a Zippy Compact 7s 20c 5Ah battery from Hobby King. The LiPos I planned to use had a 20c rating, which meant that they could handle 125amp of discharge current, and since the scooter is limited at about 30amps it meant that I would have lots of headroom/safety margin. appointments and such) only survived for about 6 months. Plus… The Gell-Cells have poor current handling ability, and in my experience of almost daily use (for shopping and Dr. It occurred to me that the two heavy lead acid gell-cells, with a drop dead voltage of 22 volts, could be replaced with 7 lightweight 5000mAh or 5Ah LiPos with a drop dead voltage of about the same voltage (22.4V), and the low battery light would still be useful. Posted in Transportation Hacks Tagged batteries, battery, hoverboard, pwm, razor, rechargeable batteries, ryobi, scooter, TL494, transport Post navigation

#EZIP 750 BATTERY FULL#

With gearing mods, he’s hoping to eke out some more performance.Īfter the break, the full conversion video. The $200 scooter now does 28 km/h, up from 22 km/h and charges much faster. We’re not saying it’s advisable to disable all current and voltage limits on your scooter, but it seems to be working out for. Cutting the trace to the TL494’s current sense pin removed the current limit all together. This motor controller uses a TI TL494 to generate the PWM waveforms that drive a MOSFET to provide variable power to the motor. With the voltage issue sorted out, it was time for the current limit to be modified. The solution: disable the safety shutdown relay on the motor controller by bridging it with a wire. It refused to start up with the higher voltage. The original batteries only ran at 24 V, which caused some issues with the motor controller. Each provides 18 V, giving 36 V in series. The new batteries were sourced from a Ryobi drill. After getting tired of the low speeds and 12 hour charge times, decided it was time to swap for lithium batteries. had an older Razor E300 that uses lead acid batteries. There’s a bunch of different electric scooters available nowadays, including those hoverboards that keep catching fire.

Ezip 750 battery