Capacity
Higher is better | Scale max: 768 Wh | AC70 leads
SOLIX C300 288 Wh
AC70 768 Wh
AC70: +480 Wh (+166.7%).
SOLIX C300 vs AC70
300W
Running power
1,000W
288 Wh
Battery
768 Wh
9 lbs
Weight
22.5 lbs
At a Glance
This comparison targets buyers choosing between a compact, ultra-light backup battery and a midsize station with significantly more muscle. The AC70 delivers 1,000W of running power and 768 Wh of capacity, roughly triple the C300's 300W output and 288 Wh reserve.
That gap shows up clearly in device compatibility: the AC70 powered 24 out of 53 tested devices versus 15 for the C300, and every device the C300 handled, the AC70 handled too. Solar recharge favors the AC70 as well, accepting up to 500W of panel input and reaching a full charge in about 2.7 hours compared to 4.1 hours for the C300.
The AC70 also pairs with 19 compatible solar panels versus just 6. The tradeoff is size: the C300 weighs only 9 lbs, less than half the AC70's 22.5 lbs, and it includes UPS functionality with a 10 ms switchover that the AC70 lacks.
Overall Winner
AC70
Powers 24 of 53 tested devices vs 15 for SOLIX C300
Home backup: AC70 RV / mobile: SOLIX C300 Solar: AC70
AC70 wins overall, but the best pick depends on your use case.
Choose SOLIX C300 if...
- + Portability matters (9 lbs vs 23)
- + Built-in UPS with 10ms switchover
Choose AC70 if...
- + You want faster solar recharging
- + You want broader device compatibility
- + You need all-day runtime headroom
Spec Snapshot
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
Running Power
Higher is better | Scale max: 1,000 W | AC70 leads
SOLIX C300 300 W
AC70 1,000 W
AC70: +700 W (+233.3%).
Surge Power
Higher is better | Scale max: 2,000 W | AC70 leads
SOLIX C300 300 W
AC70 2,000 W
AC70: +1,700 W (+566.7%).
Weight
Lower is better | Scale best: 9.0 lbs | SOLIX C300 leads
SOLIX C300 9.0 lbs (4.1 kg)
AC70 22.5 lbs (10.2 kg)
SOLIX C300: -13.4 lbs (59.8% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
SOLIX C300 3,000 cycles
AC70 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 9 show a different result between these two stations.
Both can run: 15 · Differences: 17% (9/53) · Neither can run: 29
Only AC70 can run 9
Electric Wheelchair Charger SOLIX C300: Running + surge shortfall
Portable Oxygen Concentrator SOLIX C300: Running + surge shortfall
Laptop SOLIX C300: Running + surge shortfall
Laser Printer SOLIX C300: Running + surge shortfall
Full-Size Freezer (15-17 Cu. Ft.) SOLIX C300: Needs soft-start
Desktop PC (Gaming/Workstation) SOLIX C300: Running + surge shortfall
Rice Cooker SOLIX C300: Running + surge shortfall
French Door Refrigerator SOLIX C300: Needs soft-start
Portable Ice Maker (Countertop) SOLIX C300: Running + surge shortfall
Neither can run · 29 devices
These devices exceed both stations on running power and surge.
Sump Pump (1/2 HP)
2-Slice Bread Toaster
Coffee Maker
Digital Air Fryer
Electric Skillet
Electric Stove (Single Burner)
Electric Water Kettle
Instant Pot (6 Qt)
Microwave Oven (1000W)
Toaster Oven
Electric Clothes Dryer
Dishwasher
Washing Machine
RV Rooftop AC (13,500 BTU)
EV Charger (Level 1, 120V)
Central AC (3-Ton)
Dehumidifier (70 Pint)
Gas Furnace Fan (Blower)
Portable AC (12,000 BTU)
Space Heater (1,500W)
Window AC (8,000 BTU)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
Professional Hair Dryer
Circular Saw (Corded)
Corded Drill / Hammer Drill
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Shop Vac (Wet/Dry, 5-6 HP Peak)
Full Specs Comparison
| Spec | SOLIX C300 | AC70 |
|---|---|---|
| Capacity | 288 Wh | 768 Wh ✓ |
| Running Power | 300 W | 1,000 W ✓ |
| Surge Power | 300 W | 2,000 W ✓ |
| Weight | 9.0 lbs (4.1 kg) ✓ | 22.5 lbs (10.2 kg) |
| Energy Density | 70.2 Wh/kg | 75.3 Wh/kg ✓ |
| Portability Tier | ultralight | portable |
| Chemistry | LFP | LFP |
| Cycle Life | 3,000 | 3,000 |
| Expandable | No | No |
| UPS | Yes (10 ms) | No |
| AC Voltage | 120V | 120V |
Solar Charging
Best-case charging profile using compatible solar panels.
SOLIX C300
Max solar input 100 W
Connector XT60
Full charge time ~4.1h
Compatible panels 6/20
MPPT: 11-28V
AC70
Faster Max solar input 500 W
Connector XT60
Full charge time ~2.7h
Compatible panels 19/20
MPPT: 12-58V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
SOLIX C300AC70
Emergency(2)
0/21/2
0/2
1/2
| Device | SOLIX C300 | Runtime | AC70 | Runtime |
|---|---|---|---|---|
| Full-Size Freezer (15-17 Cu. Ft.) | Soft Start | 1.3h | Safe | 3.4h |
| Sump Pump (1/2 HP) | Fail | N/A | Fail | N/A |
Entertainment(2)
1/22/2
1/2
2/2
EV & Transportation(2)
1/21/2
1/2
1/2
Heating & Cooling(7)
1/71/7
1/7
1/7
| Device | SOLIX C300 | Runtime | AC70 | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 2.4h | Safe | 6.5h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Fail | N/A | Fail | N/A |
| Gas Furnace Fan (Blower) | Fail | N/A | Fail | N/A |
| Portable AC (12,000 BTU) | Fail | N/A | Fail | N/A |
| Space Heater (1,500W) | Fail | N/A | Fail | N/A |
| Window AC (8,000 BTU) | Fail | N/A | Soft Start | 0.8h |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | SOLIX C300 | Runtime | AC70 | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Tight | 1.1h | Safe | 3h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
1/112/11
1/11
2/11
| Device | SOLIX C300 | Runtime | AC70 | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Fail | N/A | Fail | N/A |
| Coffee Maker | Fail | N/A | Fail | N/A |
| Digital Air Fryer | Fail | N/A | Fail | N/A |
| Electric Skillet | Fail | N/A | Fail | N/A |
| Electric Stove (Single Burner) | Fail | N/A | Fail | N/A |
| Electric Water Kettle | Fail | N/A | Fail | N/A |
| Instant Pot (6 Qt) | Fail | N/A | Fail | N/A |
| Microwave Oven (1000W) | Fail | N/A | Fail | N/A |
| Rice Cooker | Fail | N/A | Tight | 0.6h |
| Slow Cooker | Tight | 0.7h | Safe | 1.8h |
| Toaster Oven | Fail | N/A | Fail | N/A |
Large Appliances(4)
0/41/4
0/4
1/4
| Device | SOLIX C300 | Runtime | AC70 | Runtime |
|---|---|---|---|---|
| Dishwasher | Fail | N/A | Fail | N/A |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Soft Start | 1h | Safe | 2.6h |
| Washing Machine | Fail | N/A | Fail | N/A |
Medical(4)
2/44/4
2/4
4/4
Outdoor & RV(6)
4/65/6
4/6
5/6
Personal Care(2)
1/21/2
1/2
1/2
Power Tools(5)
0/50/5
0/5
0/5
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The Bottom Line
The C300 suits buyers who need an easily portable, grab-and-go battery for phones, laptops, and small electronics, especially where its built-in UPS capability adds value for light home-backup duty. The AC70 is the better pick for campers, remote workers, or homeowners who need to run higher-draw appliances and want faster solar charging from a wider range of panels. With a score of 46.5 versus 28 and broader device coverage, the AC70 is the clear winner in this matchup.
SOLIX C300 vs AC70 FAQ
Q Which is better for home backup, SOLIX C300 or AC70?
AC70 is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, SOLIX C300 or AC70?
AC70 has higher battery capacity (768 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
AC70 has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, SOLIX C300 or AC70?
SOLIX C300 is lighter at 9 lbs vs 22.5 lbs. SOLIX C300 is rated ultralight for portability.
Q How many devices can each power station run?
AC70 powers 24 of 53 tested devices, compared to 15 for SOLIX C300.
Q Does SOLIX C300 or AC70 have UPS mode for power outages?
Only SOLIX C300 has UPS (uninterruptible power supply) mode with a 10ms switchover time, which keeps connected devices running during a power outage without interruption.