[VHFcontesting] Batteries a few more thoughts..

[Mark Spencer]

Hi.

I agree with the comments made by others regarding using proper battery chargers.   I found my system worked better once I got a micro processor controlled charger that was designed to charge to the type of batteries I use.  (Previously I charged them with one of my DC power supplies and also tried a few schemes to charge them from various vehicle electrical systems.)

Re Trojan batteries, the battery store I deal with has recommended certain six volt Trojan batteries as the next step for me if I want to move on from the 12 volt AGM style batteries I'm currently using.   However I'm told those particular batteries (I realize Trojan probably sells many different types of batteries) shouldn't go in the cab of my truck (due to possible out gassing) so I would need to put the batteries in the truck bed and would need longer cables that would have more losses or be much larger and more expensive.  I find every 10th of a volt of loss is critical in running high power gear directly from batteries.   (I have short 4 gauge power cables for one of my 300 watt Amps.)

I'm told the batteries I currently carry  in the cab of my truck are suitable for that application but I'm relying on the advice of the vendor in that regard and I don't consider myself a battery expert.

Re generators, in the long a generator system might be less expensive than buying high quality batteries, proper battery chargers, fuses, disconnect switches, heavy gauge cables etc.   I've probably spent close to $1,000.00 on my battery system in my rover and I find the batteries typically last about 5 years.   The batteries I use cost approx $250.00 each.    (Somewhat more than typical automotive batteries.)   That being said if I had a generator system I would also need to buy a high current 13.8 Volt supply to go with it to run my brick amps.  The 70 amp supply I have in my shack is a linear one and I don't consider it to be suitable for roving.   I was also concerned about the possible noise from switch mode power supplies when operating at extremely Low noise sites in the back country.   I also have concerns about the real and perceived fire hazard issues of running generators in the back country during fire season.   Still I expect I will go to small generator as the next step in powering my rover (I'll probably also move away from Brick amps and buy more powerful amps with built in AC power supplies.)

As usual these are just my opinions and I realize the views and experiences of others may differ from mine.   

73

Mark S
VE7AFZ

mark at alignedsolutions.com
604 762 4099