# Changing the charge profile on a 2000 GEM **URL:** \ **Category:** GEM Forum\ **Created:** [August 18, 2018, 11:07pm UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332 "2018-08-18T23:07:01Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Goz](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/goz/32/5117_2.png) [@Goz](https://community.electricforum.com/u/Goz)\ **Post date:** [August 18, 2018, 11:07pm UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/1 "2018-08-18T23:07:01Z")
I have a 2000 GEM with the Delta-Q charger That is currently set to profile #14. I have installed new Duracell SLI31MDC batteries and need to change the profile. Having read the instructions and watched the video to change the profile I have two questions: 1. What profile should I use? #13 for Trojan or #32 for DEKA batteries. 2. What connection should I disconnect to change the program? Do they want the positive connection on the charger removed or can I just use one of the connections at one of the batteries? Thank you for your help. ---
**Author:** ![Naetdogg](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@Naetdogg](https://community.electricforum.com/u/Naetdogg)\ **Post date:** [August 19, 2018, 12:58am UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/2 "2018-08-19T00:58:50Z")
From a thread earlier: Algorithm 32 is for 105ah wet cell batteries specifically for Deka DC31DT also rebranded as Duracell SLI31MDC, O’reily’s SuperStart 31DCM, and NAPA Batteries BAT 8231. ---
**Author:** ![Naetdogg](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@Naetdogg](https://community.electricforum.com/u/Naetdogg)\ **Post date:** [August 19, 2018, 1:04am UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/3 "2018-08-19T01:04:02Z")
Disconnect the positive post on battery #6. ![DeltaqGem](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/5/528f36c18107e70abbf3d89638e5107374076f5f.png) ---
**Author:** ![Goz](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/goz/32/5117_2.png) [@Goz](https://community.electricforum.com/u/Goz)\ **Post date:** [August 19, 2018, 1:56am UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/4 "2018-08-19T01:56:36Z")
Thank you. I was going to use profile #32. Which battery is #6? I did try this with the battery up front and got a good spark when I touched it, so I didn’t try it again. ---
**Author:** ![Naetdogg](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@Naetdogg](https://community.electricforum.com/u/Naetdogg)\ **Post date:** [August 19, 2018, 3:03am UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/5 "2018-08-19T03:03:12Z")
Yes the battery closest to firewall under the hood ---
**Author:** ![Goz](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/goz/32/5117_2.png) [@Goz](https://community.electricforum.com/u/Goz)\ **Post date:** [August 22, 2018, 10:52pm UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/6 "2018-08-22T22:52:45Z")
I have tried to change the profile per the instruction’s given here and the ones published by Delta-Q on their website. I have had no luck. I talked to a repair person that has done work on this unit before for the previous owner. He said that I needed to replace the batteries with ones he sells for a cost of $2000. I don’t recall what brand he said to use. I see no reason not to use the ones I purchased as profile #32 seems to be designed to charge the Duracell ones I have installed. Is there someplace I can send the charger to have the profile changed? What will happen if I continue to charge the batteries with profile #14? Will they be damaged by charging them by the GEL profile? Thank you for all you help. ---
**Author:** ![Naetdogg](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@Naetdogg](https://community.electricforum.com/u/Naetdogg)\ **Post date:** [August 23, 2018, 2:29am UTC](https://community.electricforum.com/t/changing-the-charge-profile-on-a-2000-gem/14332/7 "2018-08-23T02:29:05Z")
First make sure that you have at least 36v to fire up the charger. Remember there’s a discrepancy when cycling through algorithms from 3-5 seconds. I’ve seen DQ’s that had a seemingly longer count time that was frustrating to cycle through.