SunJack Heat Bank is created for excellent fit in your hand. SunJack’s clever technology automatically turns off when its temperature reaches 122 F. However, it is not only a hand warmer with 7500mAh battery it is capable of charging smartphones around 3-4 times. One of the best features of this heat bank is that you can charge the power bank while the power bank is charging other devices. It also works with SunJack solar panels and other SunJack devices. To protect your safety as well as the devices, SunJack Heat Bank has temperature protection, overcharge and discharge protection, short-circuit protection, over current protection, over voltage protection, and over wattage protection. This tiny, yet powerful gadget juices up your devices and keeps you warm if you are camping or traveling in winter. SunJack Heat Bank weighs only 0.6 lbs, and has a dimension of 4.1 x 2.8 x 1.8 inch. I personally own two of these, and I simply love them. You will definitely enjoy using them as well. It is good to use them on the wrists or behind knees, where the skin is thinner and more fragile, because it will feel very hot, but on the other hand, it warms the circulating blood to hands and feet, depending on what you feel like warming up. It is capable of warming you for 4 hours straight on a single full charge. You can control turning it on and off just by pressing the small button on the upper side. It has a full cycle option as well, going down ¼ of a charge each time. I have never been through more than four cycles, but at most times, I recharge it after a single cycle or two. Having a very reasonable price and a lot of positive reviews, it is an ideal option for you to feel warm during cold winter days.
- 🌟Battery Capacity: 7500mAh
- 🌟Input: 2A Max Output: 2A
- 🌟Unit Dimension: 4.1" x 2.8" x 1.8" (10.4cm x 7.2cm x 4.6cm)
- 🌟Unit Weight: 14oz / 397g
- ✔ Packaging Dimension: 6.5" x 4.25" x 2.75" (16.5cm x 10.8cm x 7cm)
- ✔ Charging Time: 2A/5 hours Surface Temperature: 122°F +/- 41°F when heating
- ✔ What is in the box: Heat Bank Charging cable Strap User Manual