Court…don't waste your time or money on SLA…go to Hobbyking.com & purchase one Zippy lithium or one NanoTech 22.2v/8ah & one Zippy or NanoTech 18.5v/8ah battery. Series connect the positive of one battery to the negative of the other, both have 5.5 bullets, and you have a 46.2v/8ah battery pack charged! You too need to buy a charger. I like the iMax B6ac to charge both batteries. You too can use outside balancers when charging. Cost around $225.
Now do a simple wire job using 10awg wires coming off the controller, or lower contact, then solder 5.5mm bullets to connect to the battery. The battery only weights 5lbs & sits in the side compartment. You too can parallel a similar 2 pack for a 16ah 10lb battery. If your skilled enough you could put the lithium pack or use 18650 cells in the stock original battery case, but you will be limited to the 42v charger…..unless…..
The stock controller is still used, though they get warm using around 50v.
Then purchase a 46t (largest you can use) front chainring on ebay, and a 11t/30t rear freewheel for increased pedaling speed. You will of course need the tools to do this upgrade.
The performance will increase from 18mph to around 22/23mph with an increase in range over the heavy low cycle POS SLA.
I too would suggest replacing the stock 14 year old tires with Kenda K838 (26x1.95) from Amazon.com.
Only focus on the EVG 36v versions (LE/SX/PE) or the 36v lithium folders. The 24v are to slow (11/12mph) & the controllers are very weak. Though you can use their 400watt rear hub on the 36v/46v bikes, but you will not have any torque, but nice top end speed.
The rear heinzmann brushed hub is noisy, but the weak link is the press in one-way bearing used. Allowing anyone heavy, to ride the bike, will spin it & the rear hub is now worthless. Hence why so many PE (Police Edition) are in like new condition when sold @ auction! I'm working on a fix.
Anyone with the EVG 36v lithium folder can upgrade the front chainring, rear freewheel and find a 36v donor ebike for the lights/controller++.
Need anymore suggestions to extend the life of these older, and cheap, ebikes?
Turnigy Hard Case Lipoly packs deliver full capacity at the said C rate.
You wont find a better deal in Hard Case Lithium Polymer batteries anywhere!
Hardcase packs are a must for RC Car enthusiasts. The case helps to ensure that the batteries can stand up to the added stress and shock associated with R/C vehicles.
Minimum Capacity: 5000mAh
Configuration: 4S1P / 14.8v / 4Cell
Constant Discharge: 20C
Peak Discharge (20sec): 30C
Max Charge Rate: 5c
Pack Weight: 528g
Pack Size: 139 x 45 x 44mm
Charge Plug: JST-XH
Discharge plug: 4mm Bullet-connector
Jim…it's simple to convert to lithium poly. Do you have the original battery box? You can install the lithium batteries in the box.
If not, you will need to remove the side cases, by having the tool to remove the pedals/crank and a phillips for the sides case screws.
You may too want to check that your throttle connection is secure on the right side, many have disconnected from folding the bike. Hence why just replacing the battery by original owners, they still don't have a throttle response. A design flaw. I've used tie-strips to secure the connection.
Now you simply follow the lower battery connector to the controller for the positive and negative connections. Have enough 10awg wire to make the length to the battery box for a + & - wire. Remove the screws & secure both wires. Solder 5.5mm bullets to the opposite ends to match the battery.
Purchase a couple of lithium batteries here…. ZIPPY Flightmax 8000mAh 4S1P
These are two 14.6v batteries, that when connected in series (connect pos to neg) you will get 29.2v (8x3.65v) or 33.6v (8x4.2v)/8ah charged. Duct tape them together. They fit in the box area easily. You will note you could even add another twin pack, in parallel, and have a 33.6v/16ah battery pack for increased range.
Add a charger….I suggest & use this one: IMAX B6-AC Charger/Discharger 1-6 Cells
BTW, it's common for a "spark" when you connect the lithium battery pack to the wires from the controller you made. The stock battery box has a capacitor to minimize the spark when you install it.
Before you order the batteries/charger, verify the voltage limit on the capacitors on your 24v mini controller. I'm not sure of the limit on the 24v ebikes, as my two 36v folders have 100v on the stock controller, so it's not an issue. The 24v full size ebikes only have 25v capacitors. I know for sure the rear 24v/400watt hub can handle up to 50v. Because the stock 36v lithium mini models have 24v hubs!
I'd also suggest you increase the small 32t'ish front chain gear with a crank with a 46t + and replace the rear freewheel with a 11t/30t for top end pedaling.
The lithium batteries, being only 5 lbs & 33.6v, vs the stock 20lb & 27.2v will give you increased speed & range.
Let me know how this works out for you.
Can anyone please help me? Would like to know what year and approximate value of this E-V Global ebike. I have looked but cannot find it anywhere. Thanks. If you want you can email me at email@example.com.View attachment 17250 View attachment 17250 View attachment 17251 View attachment 17252 View attachment 17250 View attachment 17252