Sun Fun Kits

Based on the description, you are describing a 10% grade road. At full power the unit would be able to complete the distance in 32 seconds at 24.5 mph it would be with in the 50 second limit we put on the batteries and would allow up to 350 amps for that duration. Note: it may put stress on your motor & contractor though, we have customer running on longer hills with higher grades without issue.

This is the contactor on the Hisun E1: https://noco-evco.com/product/SW180B-108.htm If you read its only rated for 150A for inductive (electric motors) load. So already with Lead we are pushing it harder that it supposed as we have to compensate for the voltage drop. In contrast with lithium because ware able to keep the voltage up we are able to stay with in the current inductive load limit of the contactor. The official HISUN part is number for this is: PDDC001377450000 The batteries we have will let you push the E1 to its maximum capability, but it will not increase the machines limits, if the job you are asking for exceeds its maximum limit than regardless of what power source you choose you will run into the same situation and will need to upgrade the controller, motor, contractor and other components until it can meet your demands. NOTE: with our many Polaris Conversions we find the same weak link, pushing the unit hard results in the contactor burning out, rarely it is the batteries. In our internal tests our batteries are able to provide 400 amps for 30 mins before BMS failure.

Hi Our kit will allow you to draw 350 Amps for 50 seconds continuously, after that it will issue you a warning (this can be adjusted in the app, you can change it from 10 sec to 50 sec). As for AMPS, please note many people assume amps from lead are the same as lithium when it comes to use. This is not correct what you need to see is the watts from lead vs watts from lithium: In our video we show it takes 200 amps from lead acid to run at full power: In contrast to do the same on lithium it only takes 120 amps: So this does not mean the amps on lithium are more powerful than lead, it just means you are able to get the same watts from lithium at far less amps than on lead because the voltages do not drop on lithium. Our kit is also 3x the capacity of most lithium kits, these are usually 105AH, ours is 315Ah, the larger cells exhibit even less voltage drop. Remember watts = volts * amps. That being said in lemans terms, if you are using 200 amps on lead acid, you will be using 125 amps on lithium to do the same task on average. At 200 AMPS on lithium its roughly the same amount of power as 350 amps on lead. So you should have no issue climbing the hills (we are fairly flat part of the country so only small hills here). Remember, the contactor on the E1 is only rated for 200 amps continuous so its more likely the bottle neck will be drive train on the E1 before the batteries, we have over 400 conversions with our kits on the Polaris ranger and about 15 on the E1. Eventually we plan on releasing a 400 AMP continuous, 1200 burst kit with 4x 24v (2S2P setup) batteries but that is only for people that are going to modify the unit with upgraded motors and upgraded speed controllers, it not recommended for stock controllers and motors because in our testing we saw no difference in performance between 4x12v (4S) or 4x 24v (2S2P).

Hello, recently we converted a HiSun Sector E1 to Lithium Iron Phosphate batteries. The batteries now have 16.4 kWh (315 AH) of capacity, 24 horsepower peak, and it reduced the weight of the unit by 360 lbs. We were able to use the same onboard charger but did upload a lithium profile to it. We also needed to add custom battery trays. The conversion process is explained below in this video: We also now have a 4 port supplement charger option for those wanting a dedicated charger or are using 1 of the batterie to run a winch/snow plow with more power requirements: Finally we wanted to show cold weather use and how the unit can be setup to perform regen in the cold without problems as the batteries can regen and stay warm: