# Gem e2, 2 seater 2002 E825 Lithium Upgrade(tighter fit) **URL:** \ **Category:** GEM Forum\ **Created:** [February 10, 2017, 7:15pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042 "2017-02-10T19:15:48Z")\ **Posts on this page:** 20\ **Page:** 7
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 25, 2017, 10:10am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/124 "2017-03-25T10:10:37Z")
That’s the best way. I would like to hear from others kwh/mile result @ 25mph on level ground. > [@Gem Volt Lithium 24s 8kwh test run](https://community.electricforum.com/t/gem-volt-lithium-24s-8kwh-test-run/12185): > > At long last enough snow is melted to go for a ride. 10 Miles rolling hills. 25mph stock programming. 150 wh per mile. compared to 48v Tomberlin 250wh per mile. I used 1.5kwh in 10 miles steady easy driving 1/4 throttle Theoretical miles on my Volt X 2 pack 90ah is 50 miles. Poor driving habits may cut this in half. My normal driving stop and go hills was only 15 miles max. with 4kwh Combination of steady driving, no big hills, little plugging must near double mileage. Only picture righ… ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [March 28, 2017, 4:41pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/125 "2017-03-28T16:41:07Z")
I called Elcon/Zivan about my charger reprogramming. I acted very nice and asked if they had received it. The guy did sound very busy but he did say they would get to it in a few days. HOORAY! well, if that is true. ---
**Author:** ![Todd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/todd/32/1061_2.png) [@Todd](https://community.electricforum.com/u/Todd)\ **Post date:** [March 31, 2017, 1:34am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/126 "2017-03-31T01:34:51Z")
I really didnt have a problem with the turn around time, but they would never allow me to talk to anyone that had any technical knowledge. ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [March 31, 2017, 3:02am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/127 "2017-03-31T03:02:36Z")
U using charge relay and discharge relay? What specs and where did u get? Elcon/Zivan is working on mine now. Thx Jeffrey ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [March 31, 2017, 2:44pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/128 "2017-03-31T14:44:10Z")
[http://liionbms.com/php/wp\_charger\_control.php](http://liionbms.com/php/wp_charger_control.php) ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [March 31, 2017, 2:44pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/129 "2017-03-31T14:44:30Z")
[http://www.teledynerelays.com/pdf/industrial/sh.pdf](http://www.teledynerelays.com/pdf/industrial/sh.pdf) ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [March 31, 2017, 2:56pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/130 "2017-03-31T14:56:50Z")
![](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/f/fe9fad1ebe1029f227365ccbb144bf393f98742b.jpg) ---
**Author:** ![Todd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/todd/32/1061_2.png) [@Todd](https://community.electricforum.com/u/Todd)\ **Post date:** [April 1, 2017, 7:24pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/131 "2017-04-01T19:24:43Z")
I[quote=“nakedwaterskier, post:127, topic:12042, full:true”] U using charge relay and discharge relay? What specs and where did u get? Elcon/Zivan is wirking on mine now. Thx Jeffrey [/quote] I havent wired in the BMS yet, but I do plan on using a relay for the charger. ---
**Author:** ![Jeffrey\_Gillette](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jeffrey_gillette/32/791_2.png) [@Jeffrey\_Gillette](https://community.electricforum.com/u/Jeffrey_Gillette)\ **Post date:** [April 1, 2017, 8:23pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/132 "2017-04-01T20:23:02Z")
Specifications: High reliability, impact-resistant and long lifespan High sensitivity, low control power and excellent electromagnetic compatibility Fine anti-interference feature, fast switching speed Low drive voltage and current Low electromagnetic interference Especially suitable for corrosion, moisture, dust resistant and other harsh environments Widely used in many automatic control systems Max current:40A Model: MGR-1 D4840 Input Voltage: 3V-32V Voltage at AC side:24-380VAC Control Method: DC Control AC Package Include: 1x SSR-40 DA Relay 1x heat sink w/ 2 screws 1x thermal grease Bought it on ebay ---
**Author:** ![Jeffrey\_Gillette](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jeffrey_gillette/32/791_2.png) [@Jeffrey\_Gillette](https://community.electricforum.com/u/Jeffrey_Gillette)\ **Post date:** [April 1, 2017, 8:31pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/133 "2017-04-01T20:31:55Z")
I gather i don’t want discharge shutoff relay. Wouldn’t want my motor shutoff in traffic. THIS IS WHY I AM GLAD I DASHMOUNTED THE BLUE BMS ---
**Author:** ![lowandratty](https://avatars.discourse-cdn.com/v4/letter/l/ebca7d/32.png) [@lowandratty](https://community.electricforum.com/u/lowandratty)\ **Post date:** [April 4, 2017, 1:58am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/134 "2017-04-04T01:58:54Z")
I have a question about the charger. I too have a Zivan, has anyone had any luck converting to lithium and using the Zivan. Most use the DQ. ??? Why ??? Is it just that much easier to get lithium profiles in the DQ than any other. ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [April 4, 2017, 2:58am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/135 "2017-04-04T02:58:32Z")
Elcon/Zivan of Sacramento has been known to be a pain to deal with for getting Zivans reprogrammed. But, they seem to have improved some. With good onboard chargers costing 330 to 1100 dollars, i decided to stick w my Zivan. I am supposed to get mine back from Elcon/Zivan tomorrow. Figure 2 wks to a mo. turnaround. Also, u have to rig some sort of relay or coil to allow your BMS to turn off your Zivan. Others work out of the box w BMS. Relay costs 20 on ebay…somebody posted about using a 5 dollar coil. ---
**Author:** ![Jeffrey\_Gillette](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jeffrey_gillette/32/791_2.png) [@Jeffrey\_Gillette](https://community.electricforum.com/u/Jeffrey_Gillette)\ **Post date:** [April 4, 2017, 3:04am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/136 "2017-04-04T03:04:36Z")
Figure 110 bucks roundtrip for reprogramming…some others u just turn a dial. But, the Zivans do have enough juice to charge a big lithium pack. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [April 4, 2017, 4:53am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/137 "2017-04-04T04:53:44Z")
> [@lowandratty](#): > > have a question about the charger. I too have a Zivan, has anyone had any luck converting to lithium and using the Zivan. Most use the DQ. ??? Why ??? Is it just that much easier to get lithium profiles in the DQ than any o You can use an ssr to control ac input to any charger. I can supply the wiring. The dq is a simple one wire interface. The Gem lvc can be spoofed to a good level. Then a bypass switch added to prevent getting stranded. ---
**Author:** ![Jeffrey\_Gillette](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jeffrey_gillette/32/791_2.png) [@Jeffrey\_Gillette](https://community.electricforum.com/u/Jeffrey_Gillette)\ **Post date:** [April 4, 2017, 5:09am UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/138 "2017-04-04T05:09:57Z")
Ivc? When u do that…like MM…most don’t have a clue what u b talkin ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [April 4, 2017, 2:55pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/139 "2017-04-04T14:55:41Z")
Sorry the lingo is common on the other forums, and I’m a lazy type. An ssr is a solid state relay. Lvc is low voltage cutoff. Hvc high voltage cutoff. MM is magic magnet. speedometer correction device. Dq is Delta-Q charger. ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [April 4, 2017, 3:47pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/140 "2017-04-04T15:47:18Z")
Isn’t it better/easier to just use your BMS to sound a low voltage alarm instead of cutting off your juice (LVC) in the middle of traffic? ---
**Author:** ![nakedwaterskier](https://avatars.discourse-cdn.com/v4/letter/n/258eb7/32.png) [@nakedwaterskier](https://community.electricforum.com/u/nakedwaterskier)\ **Post date:** [April 4, 2017, 3:51pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/141 "2017-04-04T15:51:09Z")
Also, I gather that the most common aftermarket HVC setup is a normally open SSR. So, when activated by the low current from the BMS, the SSR completes a circuit instead of disconnecting? Or grounds out? Or are you reversing the polarity of the wires from the BMS to the SSR? ---
**Author:** ![Todd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/todd/32/1061_2.png) [@Todd](https://community.electricforum.com/u/Todd)\ **Post date:** [April 8, 2017, 6:35pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/142 "2017-04-08T18:35:31Z")
[https://www.ebay.com/itm/281911371909](https://www.ebay.com/itm/281911371909) ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [April 8, 2017, 7:31pm UTC](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042/143 "2017-04-08T19:31:35Z")
Looks good. Don’t forget to current limit. Input is limited to 32volts. [Previous page](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042.md?page=6) [Next page](https://community.electricforum.com/t/gem-e2-2-seater-2002-e825-lithium-upgrade-tighter-fit/12042.md?page=8)