Which Rechargeable Hand Warmers Brand Wins?

27 to 100F, 5:11 to 110F, finished third place at 7:20 behind DeeKom

16 to 100F, 4:50 to 110F (fastest to 110F at that point), finished second place overall at 6:46

fastest start of all brands at 3:08 to 100F, held the lead at 4:40 to 110F, finished first place overall at 6:31

results tossed out as unfair; has two heating elements and the bottom element cycled off before the top could heat properly, even after using a cold pack trick to force both elements on, presenter could not get a reliable reading and stopped near 10 minutes

first attempt was slow due to a rounded surface reducing heat sink contact (5:30 to 100F, 9:04 to 110F, finished 14:39); retested with the heat sink placed directly over the hottest part and improved to 3:49 to 100F, 6:30 to 110F, finished 10:54

54 to 100F, 5:51 to 110F, finished 8:22, about a minute and a half slower than Hotdot

fastest of the first several brands tested: 3:15 to 100F, 4:53 to 110F, finished third place overall at 6:56

28 to 100F, 5:18 to 110F (faster than average), finished fifth place at 7:39

23 to 100F, 5:11 to 110F, finished 7:26

slow start, 4:12 to 100F, 6:58 to 110F, finished 11:17, one of the slower performers considering the price

off to a really slow start, 5:15 to 100F, 8:55 to 110F, finished 15:57, more than twice as long as the first three brands tested

27 to 100F (trailing KQPZ by 1 second), falling a little behind at 5:15 to 110F, but moved into the lead over KQPZ at 7:24 to finish

26 to 100F (slightly faster start than Lerat), 5:12 to 110F (8 second lead over Lerat), finished 7:27, 15 seconds ahead of Lerat

29 to 100F, 5:20 to 110F, finished 7:42, described as pretty good for a budget hand warmer

presenter could not give it a fair assessment because it is activated by air movement rather than electricity; it lost momentum after the first couple of minutes and only reached just over 90F when the test was ended at 10 minutes

low 109 F, high 148.3 F

low almost 116 F, high 144 F

low 123.3 F, high 157.8 F, second highest peak initial heat behind COTOP

low 112.1 F, high 160.6 F, the highest peak initial heat of all 16 brands

low 110 F, high 137.1 F

low 111.22 F, high 143.1 F

low 100.7 F (the coolest on low heat at that point in testing), high 128.7 F (relatively cool on high heat)

low 112.2 F, high 133.3 F

low 112.9 F (about the same as OCOOPA Card), high 131.6 F (not quite as hot as OCOOPA Card)

low almost 124 F (the hottest on low heat of all brands at that point), high almost 139 F

low 123.3 F (hottest on low heat at that point in testing), high 135.1 F (coolest on high heat at that point)

low 122.5 F, high 141.7 F

low 121.3 F, high 138.7 F

low 121.7 F, high 145.1 F

tied with COTOP

tied with Kesguar

second longest runtime of all brands behind DeeKom (referred to in the transcript by the mistranscribed name GI)

second shortest runtime

the shortest runtime of all 16 brands

the longest charge time of all brands

tied with AaoLin and DeeKom

tied with COTOP

tied with Kesguar

tied with Hotdot and OCOOPA

tied with DeeKom and UNIHAND

tied with Mstoekn and OCOOPA

tied with Hotdot and Mstoekn

second longest charge time of all brands behind Funaudio

the fastest to fully charge of all 16 brands

peak 61.72 watts, the highest current of all brands, 10.71 watt hours drained capacity, third best capacity behind Mstoekn and AaoLin

peak 52.49 watts, 10.51 watt hours drained capacity

peak 52.57 watts, 6.42 watt hours drained capacity

peak 53.88 watts, 6.55 watt hours drained capacity

highest maximum charge rate of all 16 brands at 6.81 watts; peak discharge 55.69 watts, third highest; battery capacity by far the highest of all brands at 13.92 watt hours using a 21700 cell rated for 4,000 mAh

peak 47.61 watts, 10.74 watt hours drained capacity, second best capacity behind Mstoekn

peak 37.86 watts, second highest current at that point in testing; 7.31 watt hours drained capacity, just under its 3,200 mAh rating

peak 52.65 watts, 8.52 watt hours drained capacity, described as better than average

peak 54.9 watts, about the same as OCOOPA Card; 8.5 watt hours drained capacity, about the same as OCOOPA Card

peak 33.63 watts, 6.98 watt hours drained capacity, 1 watt hour less than KQPZ

peak 27 watts, 5.6 watt hours drained capacity, the battery really struggled on this test

peak 39.27 watts, 7.98 watt hours drained capacity, 2 watt hours more than Lerat

peak 35.58 watts, 6 watt hours (1,621 mAh) drained capacity, below its 2,000 mAh rating

after 35 minutes wrapped in bacon outdoors in windy 40 degree weather, a strong performer

after 35 minutes wrapped in bacon outdoors in windy 40 degree weather

after 35 minutes wrapped in bacon outdoors in windy 40 degree weather, by far the best of the brands mentioned at that point

after 35 minutes wrapped in bacon outdoors in windy 40 degree weather, described as really struggling

after 35 minutes wrapped in bacon outdoors in windy 40 degree weather