What size power station for a power tool battery charger (18 V or 20 V class)?

It needs a station with at least 63 W of continuous output. At the default 85% efficiency it takes about 148 Wh of rated capacity for its typical 2 h a day, and 593 Wh for 8 hours of running. 54 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 8 hours of running is the Jackery Explorer 600 v2 (640 Wh).

Updated October 6, 2026

63W
Continuous output
None
Surge to start it
148Wh
Capacity for its typical 2 h a day
593Wh
Capacity for 8 hours of running
54 of 54
Stations that power it

Watts

Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Running, typical: 63 W
Running, low to high: 25 W to 360 W
Starting: No start surge
Typical use a day: 2 hthe calculator starts from this, and you can change it
Average draw while on: 63 W
Voltage: 120 V

Explained in: Watts vs watt hours, explained and How to read an appliance label for watts.

The math

Worked with the typical figure, as the calculator does it.

Output63 W running, so the station's continuous output must be at least 63 W.
SurgeNo start surge: the running figure covers it.
Average draw63 W: the running watts count for every hour it is on.
A typical day63 W × 2 h = 126 Wh a day.
Typical 2 h a day63 W × 2 h = 126 Wh usable, ÷ 0.85 = 148 Wh of rated capacity.
8 hours of running63 W × 8 h = 504 Wh usable, ÷ 0.85 = 593 Wh of rated capacity.
On the Jackery Explorer 600 v2640 Wh × 0.85 = 544 Wh usable, ÷ 63 W = 8.6 h.

Stations that run it

Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.

Running watts

Typical 63 W, from 25 W to 360 W. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

54 of 54 power stations run it at 63 W.

Power stations for a power tool battery charger (18 V or 20 V class) at 63 W
Power station	Can it power it	Running time	Output	Start surge
BLUETTI Elite 10 Mini	Runs it	1.7 h	200 W	300 W
Jackery Explorer 240 v2	Runs it	3.5 h	300 W	600 W
EcoFlow RIVER 3 Plus	Runs it	3.9 h	600 W	1,200 W
BLUETTI Elite 30 V2	Runs it	3.9 h	600 W	not published
Jackery Explorer 300 v2	Runs it	3.9 h	300 W	600 W
Goal Zero Yeti 300	Runs it	4.0 h	350 W	600 W
Goal Zero Yeti 500	Runs it	6.7 h	500 W	1,000 W
DJI Power 500	Runs it	6.9 h	1,000 W	not published
Jackery Explorer 600 v2	Runs it	8.6 h	500 W	1,000 W
Goal Zero Yeti 700	Runs it	9.1 h	600 W	1,000 W
BLUETTI Elite 100 mini	Runs it	13.6 h	700 W	1,050 W
BLUETTI Elite 100 V2	Runs it	13.8 h	1,800 W	3,600 W
EcoFlow DELTA 3 Classic	Runs it	13.8 h	1,800 W	3,600 W
Anker SOLIX C1000 Gen 2	Runs it	13.8 h	2,000 W	3,000 W
EcoFlow DELTA 3	Runs it	13.8 h	1,800 W	3,600 W
EcoFlow DELTA 3 Plus	Runs it	13.8 h	1,800 W	3,600 W
Pecron E1000LFP	Runs it	13.8 h	1,800 W	3,000 W
DJI Power 1000	Runs it	13.8 h	2,200 W	4,400 W
Anker SOLIX C1000	Runs it	14.2 h	1,800 W	2,400 W
Jackery Explorer 1000 v2	Runs it	14.4 h	1,500 W	3,000 W
BLUETTI AC180	Runs it	15.5 h	1,800 W	2,700 W
ALLPOWERS R1500	Runs it	15.5 h	1,800 W	3,000 W
Jackery Explorer 1000 Plus	Runs it	17.1 h	2,000 W	4,000 W
Goal Zero Yeti 1500	Runs it	20.3 h	2,000 W	3,600 W
Jackery Explorer 1500 v2	Runs it	20.7 h	2,000 W	4,000 W
Jackery Explorer 1500 Ultra	Runs it	20.7 h	1,800 W	3,600 W
ALLPOWERS R2500 V2	Runs it	25.9 h	2,500 W	4,000 W
Jackery Explorer 2000 v2	Runs it	27.6 h	2,200 W	4,400 W
Jackery HomePower 2000 Plus v2	Runs it	27.6 h	2,400 W	4,800 W
EcoFlow DELTA 3 Max	Runs it	27.6 h	2,400 W	4,800 W
Pecron E2400LFP	Runs it	27.6 h	2,400 W	4,000 W
Anker SOLIX C2000 Gen 2	Runs it	27.6 h	2,400 W	4,000 W
EcoFlow DELTA 3 Max Plus	Runs it	27.6 h	3,000 W	6,000 W
OUPES Mega 2 Pro	Runs it	27.6 h	2,500 W	not published
DJI Power 2000	Runs it	27.6 h	3,000 W	not published
BLUETTI Elite 200 V2	Runs it	28.0 h	2,600 W	not published
Anker SOLIX F2600	Runs it	34.5 h	2,400 W	2,800 W
BLUETTI Apex 300	Runs it	37.3 h	3,840 W	not published
BLUETTI Elite 300	Runs it	40.7 h	2,400 W	4,800 W
EcoFlow DELTA 3 Ultra	Runs it	41.4 h	3,600 W	7,200 W
Anker SOLIX F3000	Runs it	41.4 h	3,600 W	7,200 W
EcoFlow DELTA 3 Ultra Plus	Runs it	41.4 h	3,600 W	7,200 W
Pecron E3600LFP	Runs it	41.4 h	3,600 W	7,000 W
ALLPOWERS R3500	Runs it	42.7 h	3,200 W	6,000 W
ALLPOWERS R4000	Runs it	46.6 h	3,600 W	6,000 W
BLUETTI Elite 400	Runs it	2.2 days	2,600 W	5,200 W
Anker SOLIX F3800	Runs it	2.2 days	6,000 W	9,000 W
Anker SOLIX F3800 Plus	Runs it	2.2 days	6,000 W	9,000 W
Goal Zero Yeti PRO 4000	Runs it	2.2 days	3,600 W	7,200 W
EcoFlow DELTA Pro 3	Runs it	2.3 days	4,000 W	8,000 W
OUPES Guardian 6000 V2	Runs it	2.6 days	6,000 W	9,000 W
Jackery Explorer 5000 Plus	Runs it	2.8 days	7,200 W	14,400 W
EcoFlow DELTA Pro Ultra	Runs it	3.5 days	7,200 W	10,800 W
EcoFlow DELTA Pro Ultra X	Runs it	6.9 days	12,000 W	not published

Add it to the runtime calculator with the rest of your list

What moves the number

A standard charger draws 25 W to about 63 W; a fast or multi port charger can reach 360 W. Charger makers name their models by output current and rarely publish input watts, so these are generator maker figures. No start surge.

Questions

How many watts does a power tool battery charger (18 V or 20 V class) use?

About 63 W while running, from 25 W to 360 W across the models in our sources. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Can a portable power station run a power tool battery charger (18 V or 20 V class)?

Yes. All 54 power stations in the Enough Watts data set can power it on its own. It takes at least 63 W of continuous output.

How long will a power station run a power tool battery charger (18 V or 20 V class)?

It depends on the battery. At 85% efficiency the smallest station that powers it, the BLUETTI Elite 10 Mini (128 Wh), gives about 1.7 h. The largest, the EcoFlow DELTA Pro Ultra X (12,288 Wh), gives about 6.9 days.

Does a power tool battery charger (18 V or 20 V class) need extra watts to start?

No. It has no motor or compressor, so it draws about its running watts from the moment it is switched on. The check that matters is a continuous output of at least 63 W.

Setups that include it

Job site tools

Sources

Researched from these pages, then checked against them a second time. The check corrected at least one figure.

Generator Wattage Chart - Champion Power Equipment generator maker guide, checked October 6, 2026
Generator Wattage Worksheet (Generac) generator maker guide, checked October 6, 2026
20V MAX*/FLEXVOLT 12 Amp Fan Cooled Fast Charger maker product page, checked October 6, 2026
12V/20V MAX* FLEXVOLT 4 Amp Charger (DCB1104) maker product page, checked October 6, 2026
20V MAX*/60V MAX* FLEXVOLT 8 Amp Fast Charger (DCB118) maker product page, checked October 6, 2026

We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.