# Gem Lithium conversion v3.1 . Drop in? **URL:** \ **Category:** GEM Forum\ **Created:** [March 9, 2019, 4:16pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590 "2019-03-09T16:16:19Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 9, 2019, 4:16pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/1 "2019-03-09T16:16:19Z")
Doing another lithium gem conversion . I Did the first one about 6 years ago with Nissan leaf cells (did a few of these ). Then did one with Lithium Titanate cells and the last one with Inwo’s green Lifepo4 cells . That cart was a 2007 and I had already changed the Deltaq to lithium profiles , so it was an easy install . Decided to do my personal cart ( 2014 E4 ) that was previously converted to Lithium Titanate . I wanted to start by trying to do a simple drop in install that almost anyone can do , Then Hot rod it further . So i got 25 cells from Inwo . Configured them in sets of 5 so that they would easily fit in the frame rails . Then charged them and equalized them . Dropped in the 5 sets of 5 and hooked them in series using the stock gem battery wires . Each module weighed about 20 lbs so it was easy work . I also kept the factory inline fuse on the battery pack . Took the gem for a ride and it is fast . The light weight plus higher voltage really brings it alive . Next was to test the factory larger set to the #14 gel setting . The charger charges the pack to 85.5v then shuts off , perfect . This charges each cell to 3.42 volts which is about 96% soc . They are rated to a max of 3.65v but 3.4v - 3.45 is optimum charge for range and longevity . So This landed up being a very easy install . The hardest part is actually removing the old , heavy lead batteries . The cart has a Ge 5hp motor , 10:35 trans and 23.5" diam tires . I live in a city that is completely flat . Cart is limited to 36mph top speed , around town , start and stop, it went just over 20 mi. . My guess if you took it easy you could get a 25 mi range . Now i am charging the pack using the different stock profiles to see what the charger will do . If i can get a higher final voltage out of it i will install another cell to make the gem even faster . ![IMG_20190309_105110](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/5/57144919a95bdee56c8a667f3c71beaf6415d592.jpeg) ---
**Author:** ![grantwest](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/grantwest/32/15_2.png) [@grantwest](https://community.electricforum.com/u/grantwest)\ **Post date:** [March 9, 2019, 4:22pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/2 "2019-03-09T16:22:26Z")
Mike: How are your battery’s heald Down? ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 9, 2019, 4:28pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/3 "2019-03-09T16:28:30Z")
Gravity 🕶 ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 9, 2019, 4:33pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/4 "2019-03-09T16:33:50Z")
Some technical notes: I am using rachet straps to secure them , in the back of the picture you can see one of the yellow straps . The Lifepo4 cells fall back to 3.34v after they are done charging , so the gem will have a 83.5v , fully charged resting voltage . The t5 has a high voltage cutoff about 85.5v so your good there. After the battery pack settled to its resting voltage i recalibrated the power meter on the dash . When the gem started slowing down it was in the yellow bar , so about perfect . ---
**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\ **Post date:** [March 9, 2019, 6:36pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/5 "2019-03-09T18:36:18Z")
Hi if i remember somewhere reading that deltaq #14 gel setting sometimes do a battery equalization charge with high volt over 90-96v but very low amp? have you see anything about that ? ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 9, 2019, 9:51pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/6 "2019-03-09T21:51:55Z")
my 2007 gem did that on gel . This deltaq did not . ---
**Author:** ![Gem\_e2](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gem_e2/32/1849_2.png) [@Gem\_e2](https://community.electricforum.com/u/Gem_e2)\ **Post date:** [March 10, 2019, 1:00am UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/7 "2019-03-10T01:00:42Z")
ok thanks for info and Gem did a Delta-Q Charger Algorithm Software Update May 4, 2007 maybe its different after that ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 15, 2019, 11:36am UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/8 "2019-03-15T11:36:47Z")
finished testing the Deltaq . Changed the profile to # 13 which is for Trojan flooded . The charger charges to a final voltage of 86.5v but the first cycle actually went to above 90v before i shut it off . After that every charge cycle went to 86.5v . It appears Deltaq does a balance charge on the lead setting .My guess is that it did it the first time and then probably does it after so many charge cycles . The other item to note is when the battery was at 85v and i tries to charge it , the charger errored . A regular lead battery would not have a resting voltage that high so it assumed something was wrong and would not start . After running the gem for a while and lowering voltage , the charger started fine ? Next set it on # 43 Deka flooded , this charged to 87.5v , so 1v higher then profile #13 . For my 26s pack neither of these profiles would be ideal . So in conclusion , the stock Deltaq shoulf work fine on setting #14 gel . For anyone using a 25s Lifepo4 battery pack . For those wanting to run more cells and higher voltage your probably going to need to add lithium profiles to your charger . ---
**Author:** ![Gemmy](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gemmy/32/6548_2.png) [@Gemmy](https://community.electricforum.com/u/Gemmy)\ **Post date:** [March 15, 2019, 3:54pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/9 "2019-03-15T15:54:06Z")
> [@LithiumGods](#): > > I had already changed the Deltaq to lithium profiles So, to be clear, your original Delta has programmable profiles? Sorry if I missed this in a previous post ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 15, 2019, 5:48pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/10 "2019-03-15T17:48:39Z")
They all have programmable profiles . The stock ones are for gel and flooded batteries . If you want to run agm or Lithium batteries you have to install different profiles in to you charger . Not easy . ---
**Author:** ![Gemmy](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gemmy/32/6548_2.png) [@Gemmy](https://community.electricforum.com/u/Gemmy)\ **Post date:** [March 16, 2019, 5:01am UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/11 "2019-03-16T05:01:47Z")
Thanks for info-who can change profiles? I want to do a lithium upgrade in the future ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 16, 2019, 10:31am UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/12 "2019-03-16T10:31:39Z")
I do it . Inwo does it if you buy a new charger from him . And there is a guy in Oregon that does it . I charge $75 for a Deltaq . ---
**Author:** ![dlcurren](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/dlcurren/32/1875_2.png) [@dlcurren](https://community.electricforum.com/u/dlcurren)\ **Post date:** [October 31, 2019, 5:33pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/13 "2019-10-31T17:33:08Z")
Does a person need special equipment to change the profiles? Before retirement, I was a computer programmer and network tech for 30 years - I think I could do it if there were instructions available. I just acquired 100 headway cells and want to put them in a 24s-4p battery for my 2003 GEM. Anyone done this before? I realize my range won’t be great, but I only need 10 miles for all the trips I make. ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [October 31, 2019, 6:00pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/14 "2019-10-31T18:00:22Z")
Yes. You have to buy a programmer. But you also need to be a dealer to get the lithium software and profiles. Deltaq won’t sell them to a end user . Inwo and I both do it . ---
**Author:** ![dlcurren](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/dlcurren/32/1875_2.png) [@dlcurren](https://community.electricforum.com/u/dlcurren)\ **Post date:** [October 31, 2019, 6:42pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/15 "2019-10-31T18:42:00Z")
I now believe that I have a zivan charger (looking at your spreadsheet). Can those also be re-profiled? ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [October 31, 2019, 9:27pm UTC](https://community.electricforum.com/t/gem-lithium-conversion-v3-1-drop-in/15590/16 "2019-10-31T21:27:23Z")
Yes , you have to send it to them .