Hi, I have been considering using LiPo’s but I have doubts… They have good capacity/size/weight, but requires special charging.
On the summit, you may need a DC-DC converter and some monitoring circuit, to make sure you don’t run them to hard or de-charge them below their limits. I.e. extra equipment you have to carry with you.
Also, they are known for their ‘instability’, I’ve seen videos of them burning voilently if handled wrongly, even just physical stress… Imagine falling hard, backpack hitting a stone… Little chance maybe, but consequences can be downright catastrophic.
On my recent SOTA activations, I used 8xAA for my little CW transceiver. Safe, not the best capacity, but enough for the hour I averaged at the summits. And they’re easy to get at, plus an extra set doesn’t weigh much in the backpack. Oh, and cheap too, compared to all the gear you need to handle LiPo’s safely.
Oh, and another question: One of the things I really enjoy at the summit, is the total absense of electrical noise! How does that compute with bringing DC-DC converters and uP controlled battery monitors? Usually we’re seated right next to the antenna, if not, then in its close vicinity.
Come to think of it, I could still use a DC-DC converter with my AA-cells, extending their life, if someone could recommend a low (as in no) noise unit, I’d appreciate it. Obviously I know all switched converters are noisy, but I think you know what I mean
So LiPo: pros and cons?
Thanks and 73