[NLRS] Sealed Lead-Acid batteries for portable ops

Doug Reed n0nas at amsat.org
Mon Jun 11 08:16:51 EDT 2012


Hi guys.

If anyone is looking for sealed lead-acid (SLA) batteries for their 
10GHz (or other) portable operations, Harbor Freight (HF) has some 
options on sale right now.

For $50 you can get a portable car starter box that uses a 12V 17 
Amp-hour battery and includes the battery trickle charger. Beware of the 
car starter boxes in the $30-$40 range since they often have a 7 or 10 
Amp-hour battery instead.

HF is also advertizing a 12V 34 Amp-hour SLA for $75 if you can accept a 
larger, heavier battery without a case.

Either battery should be able to run a 10GHz system for most of a day 
roving. You will have to do your own calculations based on standby 
current draw to see how long it will last for you.

If you don't mind spending money and want a bigger battery, check out 
the AGM battery styles. You will not find them at Harbor Freight, and 
will pay a premium price, but it is the best battery style for deep 
discharge and deep cycle standby service.

73, Doug Reed, N0NAS.


More information about the NLRS mailing list