Delta-Q Charger Guide: Picking the Right Charge Algorithm, and Every QuiQ, IC and RQ700 Model
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Most Delta-Q problems we get called about are not broken chargers. They are chargers running the wrong charge algorithm for the batteries in front of them — a charger that works perfectly, charging to the wrong voltage profile, quietly shortening the life of a $900 battery set.
This page covers how the algorithm works, how to read and change it without any tools beyond a wrench, what the fault flashes mean, and every Delta-Q model we stock new.
The one thing to understand: ten profiles, one active
A QuiQ charger stores up to ten charge profiles (Delta-Q calls them charge algorithms). Only one is active at a time. Each is built for a specific battery type and often a specific manufacturer and model — flooded lead-acid, AGM, gel and a small number of lithium chemistries all want different voltage and taper behaviour.
Delta-Q’s own instruction is blunt: use the charger only with an algorithm appropriate to the specific battery type. Their profile list warns that running an algorithm with batteries it was not designed for is at your own risk and may void the battery or charger warranty.
So when you change battery brand, change chemistry, or buy a used cart, the charger’s profile is the first thing to check — not the last.
How to read and change the active profile: the tap method
No programmer needed to select among the profiles already loaded. You need an insulated wrench, eye protection and gloves.
- Disconnect AC power. Remove the positive lead from the positive battery terminal.
- Reconnect AC power and let the LED self-test finish.
- For about 11 seconds the charger displays the current profile — on the ammeter LEDs for profiles 1–6, on the bulk-charge indicator for profiles 7 and up.
- To step to the next profile: disconnect AC, reconnect it, then touch the positive lead to the positive terminal for 3 seconds. Repeat until the profile you want is displayed.
- To lock it in: touch the lead to the positive terminal for 10 seconds. A click confirms the lock.
- Disconnect AC, reconnect to verify the new profile displays, then disconnect AC again and reattach the positive lead properly.
Two cautions. You are working on a live battery terminal with a wrench — do not skip the eye protection. And the profile you step to has to be one that is actually loaded on that charger and actually suits your batteries; stepping to profile 7 because it is next in the list is how good batteries get cooked.
When you need the programmer instead
The tap method only chooses among the profiles already in the charger. To load different algorithms you need the Delta-Q QuiQ Programmer kit (9400089-02).
One important exception: chargers built before 2006, identifiable by a serial number beginning DQCP, can select among their preloaded profiles but cannot be reprogrammed at all. If you have a DQCP charger and none of its loaded profiles suit your batteries, the charger is the wrong charger — no amount of programming will fix it.
Reading the LEDs
| Indicator | Solid | Flashing |
|---|---|---|
| AC | AC power present | Low AC voltage — check the source and the extension cord length |
| Bulk charge | Bulk phase complete, roughly 80% charged, now in absorption | With no battery connected, shows the profile number |
| Completion (green) | Charge complete, maintenance mode | Absorption complete, now in the finishing phase |
| Ammeter | Output scale during bulk | Output reduced due to high internal temperature |
| Fault (red) | — | Count the flashes between pauses and match to the fault table |
What the red fault flashes are telling you
- Battery voltage high or low — clears by itself once corrected. Usually a bad connection or a pack far outside the profile’s expected range.
- Charge timeout, or output reduced by high temperature — check connections, check that the profile matches the battery, check ambient temperature. A profile mismatch is a common cause of timeout.
- Battery could not be trickle charged — look for a shorted or damaged cell. The charger is usually right about this one.
- Shutdown on high internal temperature — airflow. Check the fan and the mounting.
- Internal fault — interrupt AC for 15 seconds or more to reset. If it returns, the unit needs a service depot.
Count the flashes carefully against the troubleshooting table in your charger’s manual; the mapping differs between families.
Lithium: read this before you reuse your QuiQ
This is the question we field most often, and the answer surprises people. Delta-Q’s published profile list contains very few lithium-ion profiles — and those that exist are built for specific manufacturers’ modules, not lithium in general.
So if you are converting a cart from lead-acid to lithium, your existing QuiQ is very probably the wrong charger, and there is no profile you can tap your way to that makes it right. A lithium pack expects a charger matched to its chemistry and working with its BMS. Do not assume a lead-acid algorithm is “close enough” — the absorption voltage and the finish behaviour are not the same problem.
Every lithium pack we sell ships with a charger matched to it, which sidesteps the question entirely. If you are keeping a charger you already own, send us the charger’s part number and serial prefix and the pack you are fitting, and we will tell you plainly whether it can work.
Every Delta-Q model we stock
QuiQ — the golf cart and light industrial workhorse
| Part number | Voltage | Current | Power |
|---|---|---|---|
| 9122400 | 24V | 25A | 695W |
| 9122400-16 | 24V | 25A | JLG variant |
| 9123600 | 36V | 21A | 875W |
| 9123600-D1 | 36V | 21A | 875W, remote LED |
| 9124800 | 48V | 18A | 1000W |
| 9124800-D1 | 48V | 18A | 1000W, remote LED |
| 9144800-01 | 48V | 30A | 1500W |
| 9127200 | 72V | 12A | 1000W |
| 9127200-D1 | 72V | 12A | 1000W, remote LED |
| 9400089-02 | — | — | QuiQ Programmer kit |
IC650, IC900 and ICL1500 — industrial on-board
| Part number | Voltage | Current | Power / note |
|---|---|---|---|
| 9400001 | 24V | 27.1A | 650W base |
| 9400004 | 24V | 27.1A | 650W, comm port |
| 9400032 | 24V | 27.1A | 650W, Raymond |
| 9400002 | 36V | 18.1A | 650W base |
| 9400003 | 48V | 13A | 650W base |
| 9400003CC | 48V | — | Club Car ERIC |
| 9400008CC | 48V | — | Club Car ERIC, with DC cable |
| 9400001S004 | — | — | AWP replacement kit, no interlock |
| 9400001S005 | — | — | AWP replacement kit, with interlock |
| 9420010 | 48V | 20A | IC900, 960W, comm port |
| 9430006 | 58V | 33.3A | ICL1500, 1500W |
| 9430011 | 120V | 18.7A | ICL1500, 1500W |
RQ700 — portable and industrial
| Part number | Voltage | Current | Configuration |
|---|---|---|---|
| 961-0006 | 24V | 30A | Industrial base, 4C DC cable |
| 961-0001 | 24V | 30A | COMM, ring terminals |
| 971-0008 | 24V | — | SB50 DC, handle and feet |
| 961-0007 | 36V | 20A | Industrial base, 4C DC cable |
| 961-0002 | 36V | 20A | COMM, ring terminals |
| 971-0007 | 36V | — | SB50 DC, handle and feet |
| 961-0008 | 48V | 15A | Industrial base, 4C DC cable |
| 961-0003 | 48V | 15A | COMM, ring terminals |
| 971-0012 | 48V | — | SB50 DC, handle and feet |
Cords, cables and spares — AC cords, the ICL/RC DC output cable, the IC1200 fan kit — are in the same place: all Delta-Q chargers and accessories.
Related
- Running 12V lights and a radio from a 48V cart — and why tapping one battery is the wrong answer.
- DC-DC converters, Curtis controllers, Sevcon controllers.
- Curtis controller guide and Sevcon controller guide.
Tell us the battery, not just the charger
If you want the right algorithm the first time, send us the battery make and model along with the charger part number and serial prefix. Email matt@electricdrivesolutions.com or call (717) 421-9988.
Every charger we sell is new — no remanufactured units, no core charges. See our Brand New Promise and warranty policy.
Profile-selection procedure, LED meanings and fault conditions are from Delta-Q’s own QuiQ user manual; the lithium profile position reflects Delta-Q’s published charge profile list. Always confirm against the manual and profile list for your exact charger before changing an algorithm.