Delta q -----change algorithm

This has been published about 2 years ago but I cant find it.

If you follow this guide you WILL be able to change the algorithm in your
DELTA Q charger.


To prepare to change the algorithm on a Delta Q on most GEM cars you will need 2 pieces of insulated electrical wire about 6 feet long connected to a momentary pushbutton switch.
The reason for this is that you will be flat on your back where you can see the indicator lights on the DQ while changing the setting.

Let’s get started.

Shut the main switch off.
Disconnect the red wire coming from the charger at the B+ (battery plus) post.
Connect one of your pushbutton wires to the post and position the other end under the cart in a comfortable position.
Connect the other wire to the charger red wire…
Turn on the main switch.
Get under the cart in a comfortable position where you can plug and unplug the charger.
Reach up and plug in the charger. The indicator will flash the current code for 11 seconds in yellow then time out and flash red.
Unplug the charger for 15+ seconds to let it reset.
Plug the charger in and push the button for a bit less than one second (count 1-1000) ¾ of a second is too short, more than a second is too long. If it continues to flash the algorithm for more than 11 seconds YOU’RE IN!!!. If it red lights, you have to start over.
When you’re in, you have 2 minutes to tap the button for a bit less than 4 secounds, count 1-1000, 2-1000, 3-1000, 4-unh. Under 3 seconds is too short, over 4 seconds is too long. If you got It. it will flash the new algorithm. If you red light, start over.
Repeat until you reach your desired algorithm. THEN
Hold the button down for 10 seconds, or until you hear the charger click indicating your new setting is stored.
Unplug the charger and shut off the main switch. Remove your setup wiring and connect the red charger wire to the post.


Don’t get frustrated . Even the long term Gem guys struggle with this . There are a few
you tube videos on it also .

This procedure pissed me off to no end until I finally got it down…
As @LithiumGods said, just keep working at it. You will get it eventually, or rent a programmer - LOL

And you must have charged batteries hooked up before attempting. I tried for quite a while to reprogram mine with the old dead batteries, I wanted to make sure I could change it before I spent a bunch of money on new batteries.

You can also use three 9v batteries in series, I built a handheld profile changer with three 9v batteries and a button so I could get the timing correct. It is a lot easier to push a button than try and touch a wire to a terminal at the exact right time. I think the charger has to see like 20v or higher to change profiles.
This way you can change profiles with the charger on a bench in you want/need to.


Yes, went through that dance with an ZoneE cart some years ago. Even after knowing how to do it, it’s tough to get right.

Where can i rent the programmer?

@LithiumGods is your guy