# GEM Forum **URL:** https://community.electricforum.com/c/gem-forum/101.md?page=59 [Latest](https://community.electricforum.com/latest.md) · [Categories](https://community.electricforum.com/categories.md) · [Tags](https://community.electricforum.com/tags.md) **Page:** 60 --- ## [Contactor for an 09 E4](https://community.electricforum.com/t/contactor-for-an-09-e4/19306)
**Author:** [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Replies:** 4\ **Last updated:** [July 7, 2020, 8:23pm UTC](https://community.electricforum.com/t/contactor-for-an-09-e4/19306 "2020-07-07T20:23:12Z")
I am still have several issues but I think I am closer to solving the mystery. I sent the controller to RFF to rebuild/reprogram as I think it is one of the issues but the other is this; I tested the contactor and follo… --- ## [Joining the GEM world and asking for feedback from the experts](https://community.electricforum.com/t/joining-the-gem-world-and-asking-for-feedback-from-the-experts/19212)
**Author:** [@luvdamud](https://community.electricforum.com/u/luvdamud)\ **Replies:** 12\ **Last updated:** [July 7, 2020, 7:55am UTC](https://community.electricforum.com/t/joining-the-gem-world-and-asking-for-feedback-from-the-experts/19212 "2020-07-07T07:55:25Z")
Hello Gem forum, hope you are all holding up well in these interesting times. I have been fascinated with all the upgrades you guys have done on these Gem cars for a while now. I have always been a “gas guy” when it ca… --- ## [2011 e4 motor over heating](https://community.electricforum.com/t/2011-e4-motor-over-heating/19287)
**Author:** [@KingPin](https://community.electricforum.com/u/KingPin)\ **Replies:** 0\ **Last updated:** [July 6, 2020, 3:47pm UTC](https://community.electricforum.com/t/2011-e4-motor-over-heating/19287 "2020-07-06T15:47:06Z")
I purchased a used 2011 e4 last year with about 450 miles on it. To begin with, I thought the batteries were bad (they are not good, but they are not completely bad… yet), as I couldn’t go more than a couple of miles bef… --- ## [I finally got around to listing my LiFePO4 green cell for sale if anyone is interested](https://community.electricforum.com/t/i-finally-got-around-to-listing-my-lifepo4-green-cell-for-sale-if-anyone-is-interested/19257)
**Author:** [@RS\_E6](https://community.electricforum.com/u/RS_E6)\ **Replies:** 12\ **Last updated:** [July 6, 2020, 1:30pm UTC](https://community.electricforum.com/t/i-finally-got-around-to-listing-my-lifepo4-green-cell-for-sale-if-anyone-is-interested/19257 "2020-07-06T13:30:54Z")
--- ## [GEM car group on Facebook](https://community.electricforum.com/t/gem-car-group-on-facebook/15361)
**Author:** [@eSGEMColo](https://community.electricforum.com/u/eSGEMColo)\ **Replies:** 0\ **Last updated:** [February 2, 2019, 4:50pm UTC](https://community.electricforum.com/t/gem-car-group-on-facebook/15361 "2019-02-02T16:50:55Z")
https://www.facebook.com/groups/259297171346710/ for the Classic GEM car (1999-2015) Polaris and other NEV/LSV --- ## [RE: LiFePo4 green cells are back $50 per cell](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974)
**Author:** [@svandgts](https://community.electricforum.com/u/svandgts)\ **Replies:** 21\ **Last updated:** [July 6, 2020, 12:47pm UTC](https://community.electricforum.com/t/re-lifepo4-green-cells-are-back-50-per-cell/18974 "2020-07-06T12:47:25Z")
Hello, I am looking to upgrade my newly acquired 2002 GEM with 25 of your cells. Any recommendations before I start this (location, custom build tray, BMS, What onboard charger will I need etc… etc…?) I have never d… --- ## [1500 miles and counting with AC CONVERSION](https://community.electricforum.com/t/1500-miles-and-counting-with-ac-conversion/19276)
**Author:** [@Matthew\_Cotten](https://community.electricforum.com/u/Matthew_Cotten)\ **Replies:** 7\ **Last updated:** [July 5, 2020, 11:49pm UTC](https://community.electricforum.com/t/1500-miles-and-counting-with-ac-conversion/19276 "2020-07-05T23:49:18Z")
Purchased may 5th 2020, installed may 13th 2020. Thank you David and Mike!:sunglasses: Put in full service that day. Daily average 35 miles at 35 to 45 mph. Charging at home for lunch and a tiny bit at work. Using a he… --- ## [00 e825 runs but looses power and stops](https://community.electricforum.com/t/00-e825-runs-but-looses-power-and-stops/16691)
**Author:** [@metalman](https://community.electricforum.com/u/metalman)\ **Replies:** 13\ **Last updated:** [July 5, 2020, 9:01pm UTC](https://community.electricforum.com/t/00-e825-runs-but-looses-power-and-stops/16691 "2020-07-05T21:01:10Z")
00 e825 runs but loses power and stops. give “gas” and car starts slow and then shuts down - over an over again??? code 04 and 11 and some times 08. cleaned and tested emg brake switch…good - cleaned and tested accelerat… --- ## [02 E825 won’t start, yet batteries fully charged](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267)
**Author:** [@Vfrmsea](https://community.electricforum.com/u/Vfrmsea)\ **Replies:** 2\ **Last updated:** [July 5, 2020, 7:48pm UTC](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267 "2020-07-05T19:48:48Z")
Hello! Looking for help with my E825. All 6 batteries are brand new and fully charged. The GEM starts up fine initially after overnight charge, but as soon as I turn it off and try to restart, I get a negative 15 error. … --- ## [Gem gearbox h12e capability](https://community.electricforum.com/t/gem-gearbox-h12e-capability/19278)
**Author:** [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Replies:** 0\ **Last updated:** [July 5, 2020, 6:36pm UTC](https://community.electricforum.com/t/gem-gearbox-h12e-capability/19278 "2020-07-05T18:36:05Z")
Just a bit of information for you guys. The torque rating for a Dana/Schaffer H12E golf cart transmission is 12 FT/LB continuous to 66 FT/LB intermittent. Rodney --- ## [Connection to monitor pack voltage 2001 e825](https://community.electricforum.com/t/connection-to-monitor-pack-voltage-2001-e825/19245)
**Author:** [@Reddevil](https://community.electricforum.com/u/Reddevil)\ **Replies:** 8\ **Last updated:** [July 5, 2020, 3:18pm UTC](https://community.electricforum.com/t/connection-to-monitor-pack-voltage-2001-e825/19245 "2020-07-05T15:18:54Z")
@Inwo @LithiumGods Hi guys, quick question: want to add a pack voltage meter. I just checked voltage across the two power connections to the controller and it read over 80v which is about right with current SOC. Is that… --- ## [LED light on 2003 gem will not turn on](https://community.electricforum.com/t/led-light-on-2003-gem-will-not-turn-on/19270)
**Author:** [@Adam333](https://community.electricforum.com/u/Adam333)\ **Replies:** 1\ **Last updated:** [July 5, 2020, 3:16pm UTC](https://community.electricforum.com/t/led-light-on-2003-gem-will-not-turn-on/19270 "2020-07-05T15:16:08Z")
2003 gem with zivan charger. when i plug it in, it does not charge and no LED light comes on. I manually charged batteries using the “alternative charging” technique. thanks in advance. --- ## [New to Forum and GEMs](https://community.electricforum.com/t/new-to-forum-and-gems/19132)
**Author:** [@jbcrew](https://community.electricforum.com/u/jbcrew)\ **Replies:** 14\ **Last updated:** [July 4, 2020, 2:25pm UTC](https://community.electricforum.com/t/new-to-forum-and-gems/19132 "2020-07-04T14:25:18Z")
Hi all, we picked up a 2002 E825 back in April after looking for a golf cart for quite a while. I did a bit of lurking on here and Google before pulling the trigger, reading I’d probably need to put around $1-2k into it… --- ## [2005 E4 Stranded us](https://community.electricforum.com/t/2005-e4-stranded-us/19247)
**Author:** [@BuckeyenDE](https://community.electricforum.com/u/BuckeyenDE)\ **Replies:** 5\ **Last updated:** [July 4, 2020, 4:44am UTC](https://community.electricforum.com/t/2005-e4-stranded-us/19247 "2020-07-04T04:44:39Z")
We had driven the GEM about 2 miles and had stopped to talk to a neighbor for about 5 minutes with the GEM on, batteries fully charged. When we pulled away after the stop we got about 200 yards and it made a loud Bang an… --- ## [PMAC or Induction AC Motor](https://community.electricforum.com/t/pmac-or-induction-ac-motor/19136)
**Author:** [@Monkeyron](https://community.electricforum.com/u/Monkeyron)\ **Replies:** 25\ **Last updated:** [July 3, 2020, 6:20pm UTC](https://community.electricforum.com/t/pmac-or-induction-ac-motor/19136 "2020-07-03T18:20:33Z")
I have a been told by a local Golf car/ Gem Car modification company they prefer PMAC (permanent magnets AC) motors over Induction AC motor. They say the power to weight ratio is almost half the weight and length. I see … --- ## [2002 Gem E825 Restore/Customizations](https://community.electricforum.com/t/2002-gem-e825-restore-customizations/13837)
**Author:** [@2002](https://community.electricforum.com/u/2002)\ **Replies:** 16\ **Last updated:** [March 3, 2019, 2:09am UTC](https://community.electricforum.com/t/2002-gem-e825-restore-customizations/13837 "2019-03-03T02:09:34Z")
Hey there, I have been reading from here for a while while doing research for a golf cart for cruising around my neighborhood and maybe registering it in the future to drive around town here in Florida. Spent around 4 m… --- ## [New "Gem a.c. motor conversions 8kw motor" Thread](https://community.electricforum.com/t/new-gem-a-c-motor-conversions-8kw-motor-thread/18981)
**Author:** [@Inwo](https://community.electricforum.com/u/Inwo)\ **Replies:** 21\ **Last updated:** [July 2, 2020, 4:40pm UTC](https://community.electricforum.com/t/new-gem-a-c-motor-conversions-8kw-motor-thread/18981 "2020-07-02T16:40:44Z")
We are getting a few in the field now and could use some feedback. I have converted a: 2018 E2 8kw 2008 Tomberlin E4 5kw Tomberlin Anvil 7.5kw Zone golf cart 8kw Ruff-N-Tuff 4wd 8kw and 48v Polaris Ranger controlle… --- ## [Fast Charging Solutions](https://community.electricforum.com/t/fast-charging-solutions/19195)
**Author:** [@MarketingMaestros](https://community.electricforum.com/u/MarketingMaestros)\ **Replies:** 1\ **Last updated:** [July 2, 2020, 4:19am UTC](https://community.electricforum.com/t/fast-charging-solutions/19195 "2020-07-02T04:19:22Z")
Are there any EV cars that come with a fast charging solution? Do you notice a difference against a regular charging solution? --- ## [2008 GEM el no power to motor controller](https://community.electricforum.com/t/2008-gem-el-no-power-to-motor-controller/19155)
**Author:** [@Stigaru](https://community.electricforum.com/u/Stigaru)\ **Replies:** 8\ **Last updated:** [July 2, 2020, 2:59am UTC](https://community.electricforum.com/t/2008-gem-el-no-power-to-motor-controller/19155 "2020-07-02T02:59:28Z")
I have a 2008 gem with no power Problems No Power to controller No 12v power No LCD Power Things that have been done new batteries new motor 1 yr old have 72-74v power everywhere until it gets to the controller … --- ## [What charger would be best for replacement of my old 10A 72v](https://community.electricforum.com/t/what-charger-would-be-best-for-replacement-of-my-old-10a-72v/19198)
**Author:** [@Hespeler](https://community.electricforum.com/u/Hespeler)\ **Replies:** 10\ **Last updated:** [July 1, 2020, 4:47pm UTC](https://community.electricforum.com/t/what-charger-would-be-best-for-replacement-of-my-old-10a-72v/19198 "2020-07-01T16:47:55Z")
What would be the best replacement for this charger ?? --- ## [Just Bought a GEM. Need Advice](https://community.electricforum.com/t/just-bought-a-gem-need-advice/19207)
**Author:** [@Surferdude](https://community.electricforum.com/u/Surferdude)\ **Replies:** 2\ **Last updated:** [July 1, 2020, 2:31am UTC](https://community.electricforum.com/t/just-bought-a-gem-need-advice/19207 "2020-07-01T02:31:44Z")
Hey everyone! Found an opportunity to buy a GEM last week, so I’ve been lurking on the forum for about a week or so while considering. Decided to pull the trigger and picked up this 2008 E4 with stock 7HP motor. Thing is… --- ## [Ride-4-Fun super charger connections (2002 Gem)](https://community.electricforum.com/t/ride-4-fun-super-charger-connections-2002-gem/19224)
**Author:** [@Bert](https://community.electricforum.com/u/Bert)\ **Replies:** 2\ **Last updated:** [June 30, 2020, 9:31pm UTC](https://community.electricforum.com/t/ride-4-fun-super-charger-connections-2002-gem/19224 "2020-06-30T21:31:32Z")
Need to know where the 2 wires coming out of the bottom of the charger connect. 1 goes to the key switch but the other has come loose and I need to reconnect it. I had a friend do some work on the steering column and it … --- ## [2008 gem e4 turtle flashing](https://community.electricforum.com/t/2008-gem-e4-turtle-flashing/19156)
**Author:** [@ca6772738758](https://community.electricforum.com/u/ca6772738758)\ **Replies:** 27\ **Last updated:** [June 30, 2020, 2:58am UTC](https://community.electricforum.com/t/2008-gem-e4-turtle-flashing/19156 "2020-06-30T02:58:39Z")
just purchased (2) cart that were sitting for 6months e4 showing turtle flashing so i charge batteries by manual and then I installed a quick charge brand new all the gel batteries show 13.3 volts after manual charge … --- ## [Non battery maintenance?](https://community.electricforum.com/t/non-battery-maintenance/19196)
**Author:** [@Gerald](https://community.electricforum.com/u/Gerald)\ **Replies:** 1\ **Last updated:** [June 29, 2020, 4:37pm UTC](https://community.electricforum.com/t/non-battery-maintenance/19196 "2020-06-29T16:37:00Z")
I don’t see any mention in my Owner’s Manual for my 2005 E2 about any lube or drive train maintenance. Nor do I see any grease zerks or oil reservoirs other than for brakes, of course. Prior owner said none that he kne… --- ## [Spicer gearbox](https://community.electricforum.com/t/spicer-gearbox/4060)
**Author:** [@ghtaboma](https://community.electricforum.com/u/ghtaboma)\ **Replies:** 20\ **Last updated:** [June 29, 2020, 4:36pm UTC](https://community.electricforum.com/t/spicer-gearbox/4060 "2020-06-29T16:36:09Z")
How do you tell ratio by tag number? PO3-25570 o12AS100 2. 02-23-2000. 7B from a E 825-2. Another from an E-825-2 Utility. PO3-25570. 012AS100 2. 01-28 2000 2A. Thanks. --- ## [How do use a manual charger](https://community.electricforum.com/t/how-do-use-a-manual-charger/19172)
**Author:** [@Adam333](https://community.electricforum.com/u/Adam333)\ **Replies:** 2\ **Last updated:** [June 29, 2020, 4:46am UTC](https://community.electricforum.com/t/how-do-use-a-manual-charger/19172 "2020-06-29T04:46:02Z")
I’m having an issue with my zivian charger. I will need to manually charge the 12 V batteries by themselves. Do I have to disconnect each battery before I charge it? --- ## [Charger question](https://community.electricforum.com/t/charger-question/19176)
**Author:** [@Hespeler](https://community.electricforum.com/u/Hespeler)\ **Replies:** 2\ **Last updated:** [June 28, 2020, 5:08pm UTC](https://community.electricforum.com/t/charger-question/19176 "2020-06-28T17:08:52Z")
I noticed that my charger sounds like it has a fan running is that Normal ? Also would a bad charger get to like say 30% charged and shut off or anything like that ? I can charge car and run it for a few trips then it co… --- ## [New Use for AC Motor Regen](https://community.electricforum.com/t/new-use-for-ac-motor-regen/19177)
**Author:** [@MikeKC](https://community.electricforum.com/u/MikeKC)\ **Replies:** 0\ **Last updated:** [June 27, 2020, 9:25pm UTC](https://community.electricforum.com/t/new-use-for-ac-motor-regen/19177 "2020-06-27T21:25:01Z")
Had a buddy that I did a 8kw AC Motor upgrade on. If you are not aware you can really adjust the regen on these setups and he has his regen turned way up. He was out last week and ran 30 miles in a day… then the batterie… --- ## [Gem steering problem](https://community.electricforum.com/t/gem-steering-problem/6421)
**Author:** [@Buzzboy](https://community.electricforum.com/u/Buzzboy)\ **Replies:** 23\ **Last updated:** [June 27, 2020, 9:08pm UTC](https://community.electricforum.com/t/gem-steering-problem/6421 "2020-06-27T21:08:43Z")
I was near home thankfully when the steering went out. When I looked underneath I found the steering collum had pulled out of the steering box and bearings were stuck in the grease on the worm gear Help please! --- ## [Need front battery tray measurments](https://community.electricforum.com/t/need-front-battery-tray-measurments/19167)
**Author:** [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Replies:** 6\ **Last updated:** [June 26, 2020, 8:51pm UTC](https://community.electricforum.com/t/need-front-battery-tray-measurments/19167 "2020-06-26T20:51:06Z")
Can someone give me the measurements of the front battery tray on an early Gem . The one that holds the 2 batteries . I’m designing a new lithium setup and wanting to see if it will fit entirely upfront . Thanks Lithiu… [Previous page](https://community.electricforum.com/c/gem-forum/101.md?page=58) [Next page](https://community.electricforum.com/c/gem-forum/101.md?page=60)