A 12V compressor fridge doesn't run all the time. It cycles on and off to hold your setpoint, so what matters for battery sizing is how much energy it uses in a day, not its running watts. ICECO publishes a 24-hour figure for most of its models, so you can work out battery runtime with simple arithmetic. Below we do that for 11 ICECO models with a published figure, on four common batteries: 50Ah, 100Ah and 200Ah LiFePO4, plus a 100Ah AGM.
Where the numbers come from
ICECO's user manuals include a table titled "What is the 24 hours power consumption?" (the most complete version is in the GOPACK12 manual on ICECO's GOPACK12 page). ICECO calls these laboratory figures and says real consumption depends on actual conditions. The VL Pro figures also match the yearly kWh on the FTC EnergyGuide labels ICECO posts on each product page. For example, the VL60ProS label shows 200 kWh a year, which works out to 0.548 kWh a day.
ICECO doesn't say what ambient temperature or setpoint the lab table uses. Its product pages also quote a harder case for some models: Max mode holding 0°F. For that, ICECO gives about 0.715 kWh/24h for the VL45ProS, against 0.510 in the lab table, and about 0.805 for the VL75ProD, against 0.636. That is 40% and 27% more. Treat the table below as a best case and leave headroom.
The math, step by step
- Daily use (Wh) = ICECO's kWh per 24 hours × 1,000.
- Average draw (W) = daily Wh ÷ 24.
- Usable battery energy (Wh): for LiFePO4 we use Ah × 12.8 V × 0.9, keeping a 10% reserve. For AGM we use Ah × 12 V × 0.5, because pulling lead-acid much below half charge shortens its life.
- Runtime (hours) = usable Wh ÷ average draw.
That gives 576 Wh usable from a 50Ah LiFePO4, 1,152 Wh from 100Ah, 2,304 Wh from 200Ah, and 600 Wh from a 100Ah AGM. Notice that a 100Ah AGM gives you roughly the same usable energy as a 50Ah lithium battery.
Worked example, ICECO APL35: 0.381 kWh/24h = 381 Wh a day, or about 15.9 W on average. A 100Ah LiFePO4 gives 1,152 ÷ 15.9 = about 73 hours, or roughly 3 days.
Runtime table: ICECO fridges on 12V batteries
These assume the battery powers only the fridge, with no charging. Hours are rounded. Days are in brackets.
| ICECO model | ICECO kWh/24h | Avg draw | 50Ah LiFePO4 | 100Ah LiFePO4 | 200Ah LiFePO4 | 100Ah AGM |
|---|---|---|---|---|---|---|
| IPT20 19.2 qt | 0.266 | 11.1 W | 52 h (2.2) | 104 h (4.3) | 208 h (8.7) | 54 h (2.3) |
| APL20 21 qt | 0.293 | 12.2 W | 47 h (2.0) | 94 h (3.9) | 189 h (7.9) | 49 h (2.0) |
| APL55 58 qt | 0.326 | 13.6 W | 42 h (1.8) | 85 h (3.5) | 170 h (7.1) | 44 h (1.8) |
| APL35 37 qt | 0.381 | 15.9 W | 36 h (1.5) | 73 h (3.0) | 145 h (6.0) | 38 h (1.6) |
| VL35ProS 37 qt | 0.430 | 17.9 W | 32 h (1.3) | 64 h (2.7) | 129 h (5.4) | 33 h (1.4) |
| GOPACK12 13.5 qt | 0.488 | 20.3 W | 28 h (1.2) | 57 h (2.4) | 113 h (4.7) | 30 h (1.2) |
| VL45ProS 47.5 qt | 0.510 | 21.2 W | 27 h (1.1) | 54 h (2.3) | 108 h (4.5) | 28 h (1.2) |
| VL45PLUS 44.4 qt | 0.542 | 22.6 W | 26 h (1.1) | 51 h (2.1) | 102 h (4.3) | 27 h (1.1) |
| VL60ProS 63 qt | 0.548 | 22.8 W | 25 h (1.1) | 50 h (2.1) | 101 h (4.2) | 26 h (1.1) |
| VL75ProD 79 qt | 0.636 | 26.5 W | 22 h (0.9) | 43 h (1.8) | 87 h (3.6) | 23 h (0.9) |
| VL90ProD 95 qt | 0.658 | 27.4 W | 21 h (0.9) | 42 h (1.8) | 84 h (3.5) | 22 h (0.9) |
ICECO doesn't publish the test conditions with its table. Use these figures to size a battery, not to rank ICECO against other brands, whose figures may come from different tests.
Models without a published figure
ICECO's consumption table doesn't list the VL45ProD, the BF65 and BF86 front-door fridges, or the Jeep edition APL35, so we haven't guessed at them. For a rough plan, start from the closest-sized model in the table and add generous headroom.
What changes real-world runtime
- Ambient heat. A fridge in a 95°F truck bed works much harder than one in a 70°F cabin. ICECO's Max-mode-at-0°F figures for the VL45ProS and VL75ProD run 27–40% above its lab table.
- Setpoint. Running as a freezer uses more energy than running at fridge temperatures. So does running both zones of a dual-zone model cold.
- Door openings and warm loads. Every lid opening lets in warm air. Loading warm drinks costs energy that pre-chilling at home would have saved.
- Max vs Eco mode. Max mode pulls down faster but uses more power. Eco mode stretches the battery.
- Insulation. ICECO sells insulated covers for most of these fridges. They help the fridge hold temperature in the sun.
- Battery protection. ICECO's manuals describe a three-level low-voltage cutoff on its fridges. On a lead-acid battery, voltage sags under load, so the fridge may shut itself off before the battery reaches the 50% point we assumed.
Which battery fits which fridge
As a rule of thumb from the table:
- Weekend, small fridge (IPT20, APL20, APL35, APL55): a 50Ah LiFePO4 covers about a day and a half to two days. A 100Ah gives you a three-to-four-day cushion. The Renogy Core Series 12V 50Ah LiFePO4 is a compact option for a truck or small camper.
- Long weekend, 37–63 qt steel VL models: plan on 100Ah of lithium. The Victron Lithium SuperPack 12.8V/100Ah NG is a drop-in choice if the rest of your system is Victron.
- A week, or the big dual-zone VL75ProD and VL90ProD: 200Ah of LiFePO4, ideally with solar. The LiTime 12V 200Ah Bluetooth LiFePO4 gives about three and a half days for the largest models before any charging.
- Already have lead-acid? A Renogy 100Ah AGM works, but count on it like a 50Ah lithium. It also weighs a lot more for the same usable energy.
Most RVs also run lights, a water pump and a furnace fan from the same battery. Add those loads before you choose a size. Our RV solar and battery calculator adds them up for you. Our RV lithium battery buying guide covers chemistry, low-temperature charging and wiring.
Recharging changes everything
The table assumes no charging. In practice a DC-DC charger tops up the battery while you drive, and even a modest solar panel can cover most of a fridge's daily use. Then a 100Ah battery can run a mid-size ICECO indefinitely in good sun. See our guide to what solar panel runs an ICECO fridge for that math. If you'd rather not wire anything, we also cover which power station suits each ICECO size.
Still choosing the fridge itself? Browse the full ICECO collection, see the matched ICECO fridge setup bundles, or read our ICECO 12V fridge buying guide.
FAQ
How long will a 100Ah lithium battery run an ICECO fridge?
Using ICECO's lab figures and 90% usable capacity, about 42 hours for the VL90ProD and about 104 hours for the IPT20. Most mid-size models land around 2 to 3.5 days. Hot weather, freezer settings and frequent door openings shorten that.
Why is a 100Ah AGM about the same as a 50Ah lithium?
Lead-acid batteries last much longer if you only use about half their capacity, so a 100Ah AGM gives roughly 600 Wh. A LiFePO4 battery can safely deliver most of its capacity, so a 50Ah LiFePO4 gives about 576 Wh.
Can I run an ICECO fridge from my vehicle's starting battery?
ICECO's three-level battery protection (9.6 V, 10.4 V or 11.1 V cutoff on 12V, per its manuals) shuts the fridge off at a set voltage so it shouldn't drain the battery past that point. Still, a separate house battery with a DC-DC charger is the safer setup for overnight use.
Are ICECO's consumption figures real-world numbers?
No. ICECO describes them as laboratory data and notes that real use varies. The Max mode at 0°F figures on its VL45ProS and VL75ProD pages are 27–40% higher, so build in headroom.