Questions tagged [battery]

Designing and using radio systems that involve battery power sources

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votes
3answers
91 views

FD Battery Stations… How Do You Log?

I'm part of a small team that runs 3AB with a few Kx3 radios. We've been struggling a bit with logging. First year was all paper and that was messy. Next couple of years one of the guys put together ...
8
votes
2answers
105 views

Does scanning take much more battery than listening on one channel?

I have a couple of HTs with channel scanning features. I imagine setting the radio to scan mode takes more power than just listening to a single channel, but what rough order of magnitude? Will I lose ...
0
votes
1answer
83 views

How do I replace the Li-ion battery in a Kenwood TM-741A?

I'm in Dominica working with a donated TM-741A. The internal memory backup battery lasted just long enough for me to learn three things: there's a backup battery; it's dead; there's no manual ...
2
votes
2answers
114 views

Deep-cycle marine battery life question

I just installed a brand new deep cycle marine battery. It goes thru a charger-inverter and will switch over automatically if the power goes down. My question is what to do with the other two (old) ...
3
votes
3answers
1k views

What is the best battery type for replacing old NiCds in a Icom 2AT?

I broke out my 2AT after a number of years. The nicads in it are dead. What kind of replacement inserts should I be looking for? Nicads are so 1980s. What is the current 'best' technology?
1
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2answers
1k views

Baofeng UV82-HX charger problem

I am having problem charging my Baofeng UV-82HX HT. No sooner do I put up the HT on the charger, it starts showing the error lights - green stable, red flickering. I bought this off the shelf in Nov ...
5
votes
1answer
315 views

How can I counter DC-DC inverter noise / ground noise in an electric-vehicle mobile setup?

So, I'm relatively new to all this; and I've gotten an ICOM IC-7100 on sale, which looks like an excellent transceiver … unfortunately, this very specific line shows up in the manual: The ...
1
vote
1answer
1k views

Yaesu FT-60 Battery Life

What is the least voltage the FT-60 can be operated at? In other words, what is the recommended voltage to change battery or charge? Menu item number 12 (DC VLT) shows the amount of charge left in ...
2
votes
3answers
795 views

Storage of a Baofeng UV-5R

I am trying to find a convenient place to store my Baofeng UV-5R, I believe the most convenient place to store it would be on its charger. I was wondering if storing the UV-5R with its battery still ...
4
votes
2answers
2k views

What is the socket for on this Baofeng BL-5L battery?

I have a Baofeng BL-5L battery for my Baofeng UV-5R transceiver, and I notice that it has a socket on the side: Please, what is this socket for?
3
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2answers
1k views

Will I harm batteries by only trickle charging them, or connecting them to a power supply?

I have some 12V, 12Ah Enercell batteries from RadioShack, RS part number 2301219. As far as I can tell these are AGM SLA batteries. I picked up this 3-stage charger from Harbor Freight and as far as ...
7
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4answers
1k views

Battery sizing for power draw

Note that this question isn't about battery capacity, at least not per se. I have a 100 Watt mobile transceiver. At 12 V and assuming 50% efficiency, that means it draws a little under 20 Amps at full ...
1
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2answers
176 views

What advantages does SLA have over a Lithium chemistry battery for a Go Box?

Whether you refer to them as go-boxes, go-kits, or rapid deployment kits, powering a transportable ham shack is of utmost importance. While both battery chemistry types have much to recommend them in ...
5
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2answers
1k views

Battery capacity vs. weight for portable transceivers

What kind of battery has the most capacity for the weight? I want to take my transceiver backpacking, so I care about weight.
9
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5answers
1k views

How can I prevent my mobile radio from draining my vehicle's battery?

I'm a very absentminded ham. I have a radio mounted in my car, wired directly to the vehicle battery. Fuses and high-gauge wire and all that good stuff. But, if I accidentally leave it on, my battery ...