Capacity
Higher is better | Scale max: 768 Wh | SOLIX C800 Plus leads
SOLIX C300 288 Wh
SOLIX C800 Plus 768 Wh
SOLIX C800 Plus: +480 Wh (+166.7%).
SOLIX C300 vs SOLIX C800 Plus
VS
300W
Running power
1,200W
288 Wh
Battery
768 Wh
9 lbs
Weight
24 lbs
At a Glance
This comparison targets buyers choosing between two Anker LFP portables that sit far apart in capability. The C800 Plus delivers 1,200W of running power and 768 Wh of capacity, roughly four times the output and over 2.5 times the stored energy of the C300's 300W / 288 Wh specs. In device compatibility testing across 53 appliances, the C800 Plus powered 24 while the C300 handled 15, every one of which the larger unit also covered.
Solar charging reinforces the gap: the C800 Plus accepts up to 300W of panel input and works with 19 compatible solar panels versus 100W and 6 panels for the C300. It also recharges faster via solar at 3.7 hours compared to 4.1. The tradeoff is size and portability.
At 9 lbs, the C300 is less than half the weight of the 24 lb C800 Plus, and it includes a 10 ms UPS function the larger model lacks.
Overall Winner
SOLIX C800 Plus
Powers 24 of 53 tested devices vs 15 for SOLIX C300
Home backup: SOLIX C800 Plus RV / mobile: SOLIX C300 Solar: SOLIX C800 Plus
SOLIX C800 Plus wins overall, but the best pick depends on your use case.
Choose SOLIX C300 if...
- + Portability matters (9 lbs vs 24)
- + Built-in UPS with 10ms switchover
Choose SOLIX C800 Plus 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: 1,200 W | SOLIX C800 Plus leads
SOLIX C300 300 W
SOLIX C800 Plus 1,200 W
SOLIX C800 Plus: +900 W (+300.0%).
Surge Power
Higher is better | Scale max: 1,600 W | SOLIX C800 Plus leads
SOLIX C300 300 W
SOLIX C800 Plus 1,600 W
SOLIX C800 Plus: +1,300 W (+433.3%).
Weight
Lower is better | Scale best: 9.0 lbs | SOLIX C300 leads
SOLIX C300 9.0 lbs (4.1 kg)
SOLIX C800 Plus 24.0 lbs (10.9 kg)
SOLIX C300: -15.0 lbs (62.4% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
SOLIX C300 3,000 cycles
SOLIX C800 Plus 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 SOLIX C800 Plus 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 | SOLIX C800 Plus |
|---|---|---|
| Capacity | 288 Wh | 768 Wh ✓ |
| Running Power | 300 W | 1,200 W ✓ |
| Surge Power | 300 W | 1,600 W ✓ |
| Weight | 9.0 lbs (4.1 kg) ✓ | 24.0 lbs (10.9 kg) |
| Energy Density | 70.2 Wh/kg | 70.5 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
SOLIX C800 Plus
Faster Max solar input 300 W
Connector XT60
Full charge time ~3.7h
Compatible panels 19/20
MPPT: 11-60V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
SOLIX C300SOLIX C800 Plus
Emergency(2)
0/21/2
0/2
1/2
| Device | SOLIX C300 | Runtime | SOLIX C800 Plus | 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 | SOLIX C800 Plus | 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 | SOLIX C800 Plus | 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 | SOLIX C800 Plus | 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 | Safe | 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 | SOLIX C800 Plus | 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
As an Amazon Associate, we earn from qualifying purchases. Our methodology
The Bottom Line
Pick the C300 if you need an ultralight backup you can toss in a daypack, especially for phones, laptops, and small electronics where its UPS switchover adds a layer of protection. Go with the C800 Plus if you want meaningfully broader device coverage, faster solar refills, and enough wattage to run mid-size appliances at a campsite or during a grid outage. The C800 Plus is the clear winner here, scoring 48.5 versus 28 and powering nine additional devices the smaller unit simply cannot handle.
SOLIX C300 vs SOLIX C800 Plus FAQ
Q Which is better for home backup, SOLIX C300 or SOLIX C800 Plus?
SOLIX C800 Plus is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, SOLIX C300 or SOLIX C800 Plus?
SOLIX C800 Plus has higher battery capacity (768 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
SOLIX C800 Plus has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, SOLIX C300 or SOLIX C800 Plus?
SOLIX C300 is lighter at 9 lbs vs 24 lbs. SOLIX C300 is rated ultralight for portability.
Q How many devices can each power station run?
SOLIX C800 Plus powers 24 of 53 tested devices, compared to 15 for SOLIX C300.
Q Does SOLIX C300 or SOLIX C800 Plus 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.