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Batteries

The 9 watt models (with the 13 watt ballasts) use about 1 amp for each bulb that is turned on. The common lead acid battery packs are usually 10 amp-hours. For a triple unit with all three 9 watt bulbs on, an 10 amp-hour battery will last for approximately 4 hours of use and there is not any quick and easy way to recharge the smaller batteries while out in the field.

18 Watt tubes draw about 2 amps per tube so we recommend the following:

Harbor Freight Tools www.harborfreight.com sells a "jump start battery" system with a 17 amp hour battery, a built in charge, white light, and a volt meter.

There is also a 12 amp-hour unit.

12 VOLT JUMP START AND POWER SUPPLY

JUMP-STARTER AND 12 VOLT POWER SUPPLY



We also offer a 10 amp hour Lead acid battery with carry bag and simple charger:


                      $65.00 Plus shipping




For a useful comparison, I had a 18 watt SW unit in the field all night using the 17 amp-hour battery unit. I ran the unit for about 10 hours.   Of course, the more bulbs/tubes that are on, the more power is used. One big advantage to the "jump start" units is that you can hook up the battery cables and reverse feed power from your car battery to the unit to get a fast recharge on the jump start battery while actually out collecting.







Find this battery at:




http://www.batteryspace.com/1619v4ahli-
ionuniversalexternalbatteryformostoflaptop.aspx



A lot of folks like this lightweight Lithium Ion Battery.  You can read about at the link provided.

A couple of our dealers also offer battery modification to the 9 watt filed lamps as well.  Please check our dealer page to find a dealer near you.



http://polmanminerals.com/

http://midnightminerals.com/