	Name	Purchased for ($)	Link	Made In
	FlexSolar	$80.00	Search on Amazon	China
Top overall. The only panel to beat its own rating in the heat: 21.52W in full sun against a 20W claim, and the most efficient at 0.12 W per square inch and 15.35 W per pound. Rubberized coating earned a perfect scratch score; the impact test left only a small dent. Caveats: it will not start charging a battery below 5V, and float control runs a bit high (cut-in 14.1V, cut-out 14.4V).
	Grecell	$50.00	Search on Amazon	China
25W-claimed panel that finished second overall. Strong everywhere: 8.87W tilted under overcast skies (7.95W overcast average), 15.71W in full sun, working float control (cut-in 13.3V, cut-out 14.1V), charging from below 1V, a perfect scratch score from its rubberized coating, and no impact damage. The standout at around $50.
	Hoysicy	$28.00	Search on Amazon	China
20W-claimed panel with a 10A charge controller and accessories. Solid output: 6.09W flat under overcast skies and 16.49W in full sun (third best). The charge controller failed the overcharge check, though — it was still pushing current into a battery at 16.2V. Scratch damage at pick #8; no impact damage.
	NXQWLL (NX)	$59.00	Search on Amazon	China
20W-claimed semi-flexible panel with the best overcast output: 10.67W flat, 10.49W tilted, a leading 10.58W average. Also second in full sun at 16.77W and efficient at 0.10 W per square inch. Float control worked (cut-in 13.8V, cut-out 14.5V). Weak points: scratch damage at the soft pick #3, a significant spark with wires that got extremely hot in the reverse polarity test, and a large dent from the impact test — though it still functioned.
	TBER	$30.00	Search on Amazon	China
20W-claimed panel with controller and leads. Strong overcast output at 6.37W flat, but it kept charging an overcharged battery at 15.5V, so float control failed. Very durable otherwise: scratch damage only at pick #9 and no damage from the impact test.
	VOLT HERO	$30.00	Search on Amazon	China
20W-claimed panel with a 10A smart controller. Float control worked properly: cut-in at 13.1V and cut-out at 14.1V. It needed a battery holding close to 4V before it began charging. Excellent durability — scratch damage only at pick #9 and no damage from the impact test. Produced 15.55W in full sun.
	EBL	$25.00	Search on Amazon	China
25W-claimed foldable panel with suction cups. Float control worked (cut-in 12.6V, cut-out 13.8V) and it began charging a battery below 1V. The rubberized coating earned a perfect scratch score, and it survived the impact test without damage. Output lagged its rating: 4.87W overcast and about 14W in full sun.
	SUNER POWER	$86.00	Search on Amazon	China
20W-claimed panel with a three-stage charging algorithm (bulk, absorption, float). Third-best overcast average at 6.56W and 14.75W in full sun. It began charging at around 5V battery voltage. Float control worked (cut-in around 13.8V, cut-out around 14.3V). Scratch damage at pick #8; no impact damage.
	TogoPOWER	$60.00	Search on Amazon	China
12V charger and maintainer with a claimed built-in MPPT. It struggled under overcast skies at 2.68W and around 10V — too little voltage to charge a car battery in those conditions — but recovered to 14.19W in full sun. Float control worked (cut-in 13.8V, cut-out 14.5V). Scratch damage at pick #8; no impact damage.
	SOLPERK	$50.00	Search on Amazon	China
20W-claimed panel with a mount bracket and tempered glass surface. It required a battery at 5V before charging began. Float cut-in was 13.7V, but the cut-out reached 15.2V, which is too high. Scratch damage at pick #8, and the impact test ruined the panel.
	Newpowa	$30.00	Search on Amazon	Vietnam
20W-claimed panel with suction cups and included leads. Managed 3.35W flat under overcast skies and about 14W in full sun. It continued overcharging a full battery well past 15V without cutting off. Scratch damage at pick #6, and the impact test left a large dent.
	PulseTech	$265.00	Search on Amazon	India
The most expensive charger by far, and the worst overcast performer at 0.12W flat; full-sun output was 11.97W against a 12W claim. The reverse polarity test produced a hot spark and the wires heated quickly. Scratch damage at the soft pick #3, and the impact test left a dent. Float cut-in was 13.8V, but it was still charging at 15.5V without ever reaching a cut-out voltage.
	Schumacher	$112.00	Search on Amazon	China
Massive 10.86 lb panel with only a 15W claim. It requires a battery holding at least 3.3V before charging begins. Float cut-in was 12.3V — below a fully charged battery's 12.6V resting voltage — with cut-out at 14.4V. Light scratches at pick #7. It shrugged off the impact test, but output lagged the field at 3.08W overcast and 11.86W in full sun.
	SHASUXTING	$18.00	Search on Amazon	China
Budget panel with a 30W claim that produced just 0.8W under overcast skies and 2.22W in full sun. It kept charging an already overcharged battery at 15.5V, so it lacks working float control. Scratch damage appeared at pick #5, and the impact test left significant visible damage.

Rank	Product	Result
1	NXQWLL (NX)	10.67
2	SUNER POWER	7.33
3	Grecell	7
4	TBER	6.37
5	Hoysicy	6.09
6	SOLPERK	5.81
7	EBL	4.87
8	VOLT HERO	4.13
9	FlexSolar	4
10	Newpowa	3.35
11	Schumacher	3.08
12	TogoPOWER	2.68
13	SHASUXTING	0.80
14	PulseTech	0.12

Rank	Product	Result
1	NXQWLL (NX)	10.49
2	Grecell	8.87
3	Hoysicy	6.47
4	SUNER POWER	5.79
5	FlexSolar	5
6	TBER	4.57
7	EBL	4.18
8	VOLT HERO	4.11
9	SOLPERK	3.85
10	Newpowa	2.68
11	TogoPOWER	2.28
12	Schumacher	2.25
13	SHASUXTING	0.76
14	PulseTech	0.10

Rank	Product	Result
1	NXQWLL (NX)	10.58
2	Grecell	7.95
3	SUNER POWER	6.56
4	Hoysicy	6.28
5	TBER	5.47
6	SOLPERK	4.83
7	EBL	4.53
8	FlexSolar	4.50
9	VOLT HERO	4.12
10	Newpowa	3.02
11	Schumacher	2.67
12	TogoPOWER	2.48
13	SHASUXTING	0.78
14	PulseTech	0.11

Rank	Product	Result
1	FlexSolar	21.52
2	NXQWLL (NX)	16.77
3	Hoysicy	16.49
4	Grecell	15.71
5	VOLT HERO	15.55
6	SUNER POWER	14.75
7	SOLPERK	14.51
8	TBER	14.37
9	TogoPOWER	14.19
10	Newpowa	14
11	EBL	14
12	PulseTech	11.97
13	Schumacher	11.86
14	SHASUXTING	2.22

Rank	Product	Result
1	Schumacher	12.30
2	EBL	12.60
3	VOLT HERO	13.10
4	Grecell	13.30
5	SOLPERK	13.70
6	NXQWLL (NX)	13.80
7	TogoPOWER	13.80
8	SUNER POWER	13.80
9	PulseTech	13.80
10	FlexSolar	14.10

Rank	Product	Result
1	SHASUXTING	0.90
2	Hoysicy	0.90
3	Newpowa	0.90
4	TBER	0.90
5	EBL	0.90
6	Grecell	0.90
7	NXQWLL (NX)	0.90
8	TogoPOWER	0.90
9	PulseTech	0.90
10	Schumacher	3.30
11	VOLT HERO	4
12	SOLPERK	5
13	FlexSolar	5
14	SUNER POWER	5

Rank	Product	Result
1	FlexSolar	15.35
2	NXQWLL (NX)	14.52
3	Newpowa	8.56
4	Grecell	6.89
5	SHASUXTING	6.54
6	EBL	6.21
7	PulseTech	5.52
8	TBER	5.12
9	SOLPERK	4.97
10	Hoysicy	4.68
11	VOLT HERO	4.67
12	TogoPOWER	4.40
13	SUNER POWER	3.21
14	Schumacher	1.09

Best Solar Battery Charger: 14 Chargers Tested

Top Picks

Price

Overcast Output — Panel Flat

Overcast Output — 28° Tilt

Average Overcast Output

Hot Sunny Output — After Heat Soak

Float Charge Cut-In Voltage

Float Charge Cut-Out Voltage

Minimum Battery Voltage to Begin Charging

Scratch Resistance

Weight

Reverse Polarity Protection

Most Compact Panels

Efficiency by Area

Efficiency by Weight

The Verdict

Related Tests

Top Picks

Price

Overcast Output — Panel Flat

Overcast Output — 28° Tilt

Average Overcast Output

Hot Sunny Output — After Heat Soak

Float Charge Cut-In Voltage

Float Charge Cut-Out Voltage

Minimum Battery Voltage to Begin Charging

Scratch Resistance

Weight

Reverse Polarity Protection

Most Compact Panels

Efficiency by Area

Efficiency by Weight

The Verdict