Cadillac Escalade IQ Battery: 205 kWh Size, Range Tests & Replacement Cost
The Escalade IQ’s battery is the whole reason the truck exists — and ‘how big is it?’ is the question everyone lands here with. Short answer first, then everything behind it.
You asked how big the Escalade IQ’s battery is, so here’s the number before anything else: 205 kWh — a 24-module Ultium pack, the biggest battery fitted to any production SUV, shared with the longer IQL. Cadillac reckons it’s good for 465 miles (there’s no EPA figure for this truck, and this page explains why), it fast-charges at up to 350 kW, and prices start at $127,405. And if you came for the replacement-cost answer, it’s here too — and it’s not the figure most sites invent: GM publishes no complete-pack price at all.
- Pack: 205 kWh NCMA Ultium, 24 modules
- Real test numbers: 380 miles at 75 mph (Car and Driver); 558 miles on Edmunds’ test loop
What size is the Escalade IQ battery?
It is a 205 kWh pack — and “how big is it?” is the right first question, because this battery is the entire point of the vehicle.
Cadillac builds the IQ around a 24-module Ultium battery holding 205 kWh, more than double the pack in a standard-range Tesla Model Y. The longer Escalade IQL uses exactly the same battery; the two trucks differ in body length and price, not in energy. Cadillac quotes the 205 kWh figure without splitting it into gross and usable numbers, so that is how it is reported here — anyone printing a separate “usable” figure for this pack is estimating, not quoting.
| Escalade IQ | Escalade IQL | |
|---|---|---|
| Battery | 205 kWh (24-module Ultium) | 205 kWh (same pack) |
| Cadillac-estimated range | 465 miles | 460 miles |
| DC fast charging | 350 kW max · ~117 miles in 10 min | 350 kW max · ~116 miles in 10 min |
| Price from | $127,405 | $130,405 |
What is the pack made of?
The cells use GM’s NCMA Ultium chemistry — nickel-rich, with manganese, cobalt and a small amount of aluminium in the cathode — the same family that powers the Lyriq, the Hummer EV and the Silverado EV. The modules can be arranged in different counts across GM’s trucks and SUVs, which is how one cell programme serves everything from a crossover to this 205 kWh flagship; our GM Ultium chemistry explainer walks through how the chemistry and the module system work.
How heavy is a 205 kWh battery?
Heavy enough to change the vehicle’s paperwork. The IQ’s size and weight are why the EPA publishes no range estimate for it at all — the truck sits over the weight threshold where an EPA figure is required, a point the range section below explains. It is also why the IQ rides and parks like the full-size Escalade it is named after, battery or not: this is not an EV that happens to be big, it is a big truck that happens to be electric.
How far does the Escalade IQ really go?
Three honest numbers exist, and they disagree because they measure different things: Cadillac’s 465-mile estimate, Edmunds’ 558-mile test result, and Car and Driver’s 380 miles at a steady 75 mph.
Start with the missing one. There is no EPA range for the Escalade IQ — none. The EPA does not publish an estimate for this truck because of its weight class, so every “EPA range” figure quoted for it anywhere is wrong. What Cadillac publishes is its own estimate: 465 miles for the IQ, 460 for the IQL.
Edmunds then did something remarkable: on their standardised test loop, a 2025 Escalade IQ ran 558 miles on one charge, the longest result in their programme’s history. Car and Driver, running the test that flatters EVs least — a constant 75 mph on the highway — measured 380 miles. Both results are real. The difference is the driving: slow, gentle, mixed-speed running lets a huge pack sip; a 75-mph cruise in a vehicle shaped like this one spends energy fast, however big the battery is.
Which number should you plan around?
Your own driving decides. Mostly urban and suburban use with home charging? Your experience will sit closer to Edmunds’ end of the scale, and you will charge this truck rarely — a 205 kWh pack holds roughly a week of ordinary commuting. Regular long highway runs? Plan stops around the Car and Driver figure. Either way, range anxiety is not a rational concern in this vehicle; the battery is simply too large.
How fast does the Escalade IQ charge?
At up to 350 kW on a DC fast charger — Cadillac quotes up to 117 miles added in about 10 minutes — with home charging split by trim in a way most listings never mention.
The pack’s 800-volt-class architecture (the modules reconfigure for fast charging) is what makes 350 kW possible; on paper this is among the fastest-charging vehicles sold in the US. In practice, chargers that can actually deliver 350 kW are still the minority of sites, so real sessions will often run below the peak.
What about home charging?
Here is the detail buyers miss: the standard onboard charger is 11.5 kW on Luxury and Sport trims (about 22 miles of range per hour), while Premium Luxury and Premium Sport trims get 19.2 kW (about 36 miles per hour). On a truck with a 205 kWh battery that gap matters — an overnight charge on the bigger unit returns roughly 150 more miles than on the smaller one. A 7.7 kW dual-level charge cord is included either way. If you are speccing an IQ and intend to charge at home, the trim decision is also a charging decision.
Can it power your house?
Yes, with the right equipment. Cadillac sells the IQ’s backup-power capability through GM Energy’s PowerShift charger: in an outage, a properly equipped home can draw on the truck’s 205 kWh — several days of essential loads for most houses, and a genuine reason some buyers choose this vehicle over a home battery install.
What does an Escalade IQ battery cost to replace?
This is the question readers actually click for, so here is the straight answer: GM publishes no price for a complete 205 kWh pack, and anyone quoting you one is guessing.
We searched GM’s own parts catalogs (GMPartsDirect and GM Parts Center) the way a parts department would. For the 2026 Escalade IQ, the catalog’s Battery Assembly diagram lists exactly one high-voltage part: the individual battery assembly, part 24065041, at $2,439.60 (GMPartsDirect) or $2,374.33 (GM Parts Center). That is a module-level assembly, not the pack — and no, multiplying it by 24 does not produce a pack price: a pack replacement also involves the case, cooling, contactors, harnessing and many hours of labour, none of which GM itemises publicly.
Three things follow for owners. First, a genuine full-pack replacement today is a dealer-quote-only job, and the quote will be large — this is a 205 kWh pack in a $127,000 vehicle. Second, almost no owner will pay it soon: the battery carries an 8-year/100,000-mile warranty (next section), so failures in the car’s early life are GM’s bill. Third, the realistic out-of-warranty repair is the module-level one the catalog actually prices — packs built from serviceable modules rarely need every module at once. If a dealer quotes you a full-pack figure, ask them to itemise it against the catalog part above; it is the only published number in this conversation.
What warranty does the Escalade IQ battery carry?
Eight years or 100,000 miles — and one honest gap: Cadillac does not publish a capacity-retention percentage for this battery.
The battery warranty term is listed at 8 years/100,000 miles, matching GM’s EV programme across the Ultium range. What you will not find in Cadillac’s materials is the promise most rivals print — a guaranteed minimum capacity (usually 70%) inside that term. Cadillac’s public warranty page does not discuss the battery at all, and no GM document we could open states a retention floor for the IQ. That does not mean a badly degraded pack has no remedy — warranty law and GM’s own goodwill both exist — but the printed guarantee is thinner here than at brands that publish a floor. Our EV battery warranty guide sets out what each maker’s terms actually promise, so you can compare before you buy.
Is there any degradation data for the Escalade IQ yet?
No. The fleet trackers that publish model-level battery health (Recurrent, Geotab) hold no Escalade IQ data — the truck is too new and too rare. The pack is closely related to the Hummer EV and Silverado EV units, but borrowing their numbers would be a guess dressed as data, so this page will simply say so until real IQ measurements exist. What is known is the chemistry family’s general behaviour — NCMA packs of this design are built for the 8-year warranty term above, and the IQ’s sheer size works in its favour: a 205 kWh pack that loses 10% still holds about 185 kWh, more than almost any other EV starts with.
Frequently asked questions
What size battery is in the Escalade IQ?
205 kWh — a 24-module Ultium pack, shared with the longer IQL. It is the largest battery in a production SUV, and Cadillac does not publish a separate gross/usable split.
What is the EPA range of the Escalade IQ?
There isn’t one. The EPA publishes no range estimate for the IQ because of its weight class. Cadillac’s own estimate is 465 miles; Car and Driver measured 380 miles at a steady 75 mph, and Edmunds recorded 558 miles on its test loop.
How much does it cost to replace an Escalade IQ battery?
GM publishes no complete-pack price. Its parts catalog lists the individual high-voltage battery assembly (part 24065041) at $2,439.60. Inside the 8-year/100,000-mile battery warranty, a failed pack is GM’s cost, not yours.
How fast can the Escalade IQ charge?
Up to 350 kW DC, adding up to about 117 miles in 10 minutes. At home, 11.5 kW AC on Luxury and Sport trims or 19.2 kW on Premium trims — check the trim, because it decides your overnight charging speed.
Does the Escalade IQL have a bigger battery than the IQ?
No — the IQL is the longer body on the same 205 kWh pack. Its Cadillac-estimated range is 460 miles (5 less than the IQ) and it starts at $130,405, $3,000 above the IQ.
Conclusion
The Escalade IQ’s battery is the headline and the substance: 205 kWh, honestly fast charging, test results that depend — as all test results do — on how the test was run, and a replacement-cost picture that is a catalogued module price plus a deliberate silence where a pack price should be. If you are cross-shopping, the Cadillac Lyriq runs a smaller Ultium pack in a lighter body, and the comparison says a lot about what the IQ’s extra size is really buying. Buy the IQ for space and presence; just know its battery’s promises are Cadillac-estimated, its warranty floor is unpublished, and its real highway range is 380 miles — which, for almost everyone, is still more than enough.
Quick view: One 205 kWh NCMA Ultium pack shared by the IQ and IQL; 465-mile Cadillac estimate (no EPA figure); 380 miles at 75 mph (C&D), 558 on Edmunds’ loop; 350 kW DC; 11.5 or 19.2 kW AC by trim; no published full-pack price (module assembly $2,439.60); 8-year/100,000-mile warranty, no published capacity floor.
