I was given a Battery pack which is capable of starting your car and powering phones and gadgets via a USB connection. It comes in a kit and is packaged in a zipped bag which is small enough to fit under the front seat. We got it from a motoring shop and it was about $130.
It has a lithium ion battery which rated at 1200 mAh which can put out a peak jump start current of up to 400 amps yet it is only about 160mm x 75mm x 28mm and weighs 430g. It has a 12 volt outlet with ‘jumper leads’ to attach to the car battery. There is a warning that the battery pack should be removed within 30 seconds of the car starting because it is not capable of taking the charge from the cars alternator. I have used it to start half a dozen vehicles and it has worked on most of them but if the cars battery is dead flat it was unable to provide enough power.
It also has a USB outlet and a variety of connectors to fit most phones and mini/micro USB plugs. I have made up an adaptor lead to run my 12 volt camp lights and it will keep them running all night.
It is recommended to recharge it every three months and this can be done via a cigarette power plug from your car or the 240 transformer, both of which are provided in the kit.
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