EV Battery Center -
Testing
EZGO Lithium conversion - Battery test 58Ah 53V
The EzGo golf cart is powered by an installed conversion battery pack made with low capacity Nissan Leaf battery modules - 58Ah measured capacity (the modules in packs for sale have a minimum of 60Ah). It contains 7 such Nissan Leaf modules, 14 cells total. Total energy capacity 3100Wh. The pack is very light - about 65lb. Size 13.5x9x9"
The EzGo golf cart is owned by our shop, it has the original motor and controller, but reprogrammed to the maximum speed of 19.5MPH and with the fastest acceleration possible (Thanks to Gary A, Orlando, FL). Motor is rated 3200W, but during the tests the measured maximum peak power reached 11000W. During climbing uphill the average power was 5000-6000W. As a result the motor almost burned during the tests. It was running nonstop for an hour and became very hot and smell burning.
The odometer was calibrated with no more than 3% error. The driver tryed to keep all the time the maximum speed of 19MPH - there is no difference in the maximum speed during climbing or rolling down. As result the average speed was 14.5MPH.
The pack installed for the tests is similar to:
Golf Cart Lithium Conversion 3200Wh Battery Pack GB5360-15
or the version without aluminum box -
Golf Cart Lithium Conversion 3300Wh Battery Pack DIY5360-15 DIY
The test was made twice - we had electric brake problem during the first test. Brake stuck few times during the driving. Second test was made after the brake been replaced.
On the second test we calculated 2750Wh for the first 27 miles, based on the discharging diagram of the battery and the voltage of the 27th mile. That makes 100Wh per mile energy spent from the battery. At the power outlet via the charger and loses during charging process - XXXX (will be updated)
VOLTAGE/ MILES TRAVELED DIAGRAM
The total miles traveled until the BMS stopped the discharge were 29 at the second test. The BMS is set to 3V per cell - 42V as minimum voltage. We recommend using 50-51V as a minimum, since there is not so much power left in the battery. At the 50V point - we had 2.5 miles more left.
On a grassy (golf course) terrain expect less miles. Some clients reported 18-22 miles maximum range if driving partially on grass.
For higher range (more than double) consider installing the 6400Wh Battery Pack DIY53120-15.
Video of the test track
Total round trip traveled 0.55 mi including: 0.2 mi climbing, 0.075 mi flat terrain, 0.2 miles downhill, 0.075 mi flat.
Average speed: 13 mi/hMPH with frequent stops and acceleration.
EZGO Lithium conversion - Battery test 100Ah 45V
The EzGo golf cart is powered by an installed conversion battery pack made with high quality Chevrolet Volt 2015 batteries - 50Ah measured capacity. It has configuration 12S6P. Total energy capacity 4500Wh.
The EzGo golf cart is owned by our shop, it has the original motor and controller, but reprogrammed to the maximum speed of 19.5MPH and with the fastest acceleration possible (Thanks to Gary A, Orlando, FL). Motor is rated 3200W, but during the tests the measured maximum peak power reached 11000W. During climbing uphill the average power was 5000-6000W. As a result the motor almost burned during the tests. It was running nonstop for an hour and became very hot and smell burning.
The odometer was calibrated with no more than 3% error. The maximum speed reached was 19MPH - there is no difference in the maximum speed during climbing or rolling down.
The pack installed for the tests is similar to: 94Ah 45V Lithium Golf pack
Here are the results:
VOLTAGE/ MILES TRAVELED DIAGRAM
The total miles traveled until the battery reached 42V (3.5V per cell) were 40. No BMS for discharge protection installed. We recommend using 42V as a minimum, since there is not so much power left in the battery. At the 42V point - we had 3 miles more left.
On a grassy (golf course) terrain expect less miles.
Video of the test track
Total round trip traveled 0.55 mi including: 0.2 mi climbing, 0.075 mi flat terrain, 0.2 miles downhill, 0.075 mi flat.
Average speed: 13 mi/hMPH with frequent stops and acceleration.
EZGO Lithium Battery Test 82Ah, 46V
The EzGo golf cart is powered by an installed conversion battery pack made with the newest generation battery. Measured capacity at the full range of the battery 4.2-2.5V. It contains 3 modules, 12 cells total. Total energy capacity rated by the manufacturer 3750Wh. The pack is very light - about 58lb.
The EzGo golf cart is owned by our shop, it has the original motor and controller, but reprogrammed to the maximum speed of 19.5MPH and with the fastest acceleration possible (Thanks to Gary A, Orlando, FL). Motor is rated 3,200W, but during the tests the measured maximum peak power reached 11,000W. During climbing uphill the average power was 5,000-6,000W. Continuous driving about hour, 2-3 rounds. After hour the motor was very hot and was smell burning.
The odometer was calibrated with no more than 3% error. The driver tried to keep all the time the maximum speed of 19MPH - there is no difference in the maximum speed during climbing or rolling down. As result the average speed was 15.5MPH.
The pack installed for the tests is similar to:
Golf Cart Lithium Conversion 3750Wh Battery Pack GB4682-17
VOLTAGE/ MILES TRAVELED DIAGRAM
The total miles traveled until the BMS stopped the discharge were 42. The BMS doen't not stop the power for safety reason for the diver, avoiding sudden stop. We recommend using 42V as a minimum which will reduce the total miles on this test to 35 miles. After 42V there are no not so much power left in the battery.
Video of the test track
Total round trip traveled 0.55 mi every round - including: 0.2 mi climbing, 0.075 mi flat terrain, 0.2 miles downhill, 0.075 mi flat.
Average speed: 13 mi/hMPH with frequent stops and acceleration.
EZGO Lithium conversion - Battery test 52Ah 52V LiTec
The EzGo golf cart is powered by an installed conversion battery pack made with high quality LiTec automotive 2015 batteries - 52Ah measured capacity. It has configuration 14S1P. Total energy capacity 2600Wh.
The EzGo golf cart is owned by our shop, it has the original motor and controller, but reprogrammed to the maximum speed of 19.5MPH and with the fastest acceleration possible (Thanks to Gary A, Orlando, FL). Motor is rated 3200W, but during the tests the measured maximum peak power reached 11000W. During climbing uphill the average power was 5000-6000W. As a result the motor almost burned during the tests. It was running nonstop for an hour and became very hot and smell burning.
The odometer was calibrated with no more than 3% error. The maximum speed reached was 19MPH - there is no difference in the maximum speed during climbing or rolling down.
The pack installed for the tests is similar to:
LiTec Battery pack 52V 2.6kWh
or this one:
LiTec Battery pack 52V 2.6kW with BMS
Here are the results:
VOLTAGE/ MILES TRAVELED DIAGRAM
The total miles traveled until the battery reached 48V (3.4V per cell) were 25. No BMS for discharge protection installed. We recommend using 48V as a minimum, since there is not so much power left in the battery. At the 48V point - we had 4 miles more left.
On a grassy (golf course) terrain expect less miles.
Video of the test track
Total round trip traveled 0.55 mi including: 0.2 mi climbing, 0.075 mi flat terrain, 0.2 miles downhill, 0.075 mi flat.
Average speed: 14.5 mi/hMPH with frequent stops and acceleration.