ReTrak ETPB2CM5 Premier 2-in-1 Car Charger 2200 mAh Power Bank Retractable Micro USB Cable Black

Probably going to return these. I bought these to supply constant power to my USB WiFi modem that supplies Internet for my Android radio. Without constant power, the modem has to reboot any time you make a quick stop for gas or something. Then you have to wait for it to reboot before the radio gets Internet connection again. I figured these would solve that issue since they have built-in batteries. Unfortunately they don't work because they lose power for about 3 seconds whenever you turn off the car and these switch to battery power. This means the modem still has to go through reboot process. Looks like I probably need a 12v UPS (uninterrupted power supply) for my problem. They probably work just fine if you just need a phone charger. Read more

This works great 3 in 1. Its a portable on the go chargere and charges in car & in the house Read more

Best gift I give people, they don't realize they need it until they have it- I'm buying 10 for Christmas presents! Read more

Loved it so much I ordered another! Read more

Love this. Not only does it charge while you are in the car but when you realize you need to leave the car and your item is still not charged you have a ready "bank" to take with you. Life saver as who remembers to charge their bank....this is just always ready when you need it. Read more