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FAQ: Frequently Asked Questions and Answers
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Here at HPI Racing UK there is a dedicated team of Customer Service Technicians at the end of a telephone, to take care of your warranty and technical needs, no matter how big or small.

If you require any assistance please contact the Customer Service Team by typing in your question below or contact us by calling 0845 00 66 160 or if you prefer not to use our 0845 number, you can also call us on (01283) 226570. (Standard office hours are 8:30-17:00 Monday to Friday)
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The amount of time it takes to charge a battery pack varies. Each battery has a "milliampere capacity", this is the number printed on the package (1400, 1500, 1700, 2000, 2400, 3000, etc.). The higher the number, the more power the battery holds and the longer it takes to charge the battery. Also, battery chargers can charge at different "amp rates", or power output, so a battery that can charge at 6 amps will charge a particular battery faster than a charger that is charging up that same battery at 4 amps.

Some of the more powerful electric models use a Lithium Polymer or LiPo battery - these must be charged using a compatible charger such as the HPI Reactor 500, and we'd always advise charging the batteries in line with their manufacturers recommendations. It's also advisable to use a LiPo safe charging bag when charging LiPo batteries.

If you wanted to calculate how long your battery will take to charge you would need to divide the Capacity of the battery by the Charge Current. For example an 1800mAh battery charged on a charger with a 300mA output (typical RTR charger) will take 1800/300 = 6 Hours. Another example if you are using a fast charger like the Reactor 500 you can up the Charge Current to 3.6A which turns that into 1800/3600 = 0.5 hours. Again please follow the Batteries Manufacturers recommendations for charging your battery!

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