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Old 18 August 2014, 16:45   #11
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Originally Posted by kerny View Post
I'm sure that the SH are very good but I have never owned one so I can't really give any advice on them, but I have had my icom M71 for 5 or 6 years now and the battery life is excellent.

When away for the weekends I charge it up the Thurs night to take with me and when I get back home on the Sunday I leave the radio switched on with the volume on low to completely run the battery out.

This usually takes 3 days, then when its flat I always disconnect the battery from the unit then put it away until next time.

Doing has kept it in tip top condition and it has served me well and always lasts like from the first day I got it. p.s. I forgot to mention I always give it a good rinse with fresh water.
Interesting Steve, I always store mine charged.
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Old 18 August 2014, 16:56   #12
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Originally Posted by kerny View Post
I'm sure that the SH are very good but I have never owned one so I can't really give any advice on them, but I have had my icom M71 for 5 or 6 years now and the battery life is excellent.

When away for the weekends I charge it up the Thurs night to take with me and when I get back home on the Sunday I leave the radio switched on with the volume on low to completely run the battery out. .
Listening guzzles very little power. Transmit is the power hungry bit. Add GPS for DSC and you need to watch...

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Interesting Steve, I always store mine charged.
Lithium ion doesn't have the same issues that NiMH does...
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Old 18 August 2014, 17:06   #13
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...No flat battery...
unless a flat (main engine) battery is the reason he is trying to call for help.

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there are people on here who don't rate the IPX7 cobra either but it wouldn't be worse than useless...
unless its stopped working (as they can do eventually) - when its dead its dead.
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Old 18 August 2014, 17:12   #14
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Lithium ion doesn't have the same issues that NiMH does...
True NiMH cells don't catch fire anywhere near as frequently

COrrect storage is tricky but heat will kill them

How to Prolong Lithium-based Batteries - Battery University

This article interestingly suggests not storing flat (deep discharge can occur) or full.... but around 40%...
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Old 18 August 2014, 17:23   #15
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unless a flat (main engine) battery is the reason he is trying to call for help.
Small boat, small engine. Manual starting should be possible.

In my experience HH radio batteries die far more than rib engine batteries...

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unless its stopped working (as they can do eventually) - when its dead its dead.
That's useless rather than worse than. Useless ;-). Still got your little cobra that could only transmit at 3w with a following wind if you pointed it in the right direction while saying some hail Marie's? That was worse than useless! Especially as it didn't have all UK channel s on it...
Did look cute though
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Old 18 August 2014, 17:25   #16
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Quote:
Originally Posted by ShinyShoe View Post
Listening guzzles very little power. Transmit is the power hungry bit. Add GPS for DSC and you need to watch...

Lithium ion doesn't have the same issues that NiMH does...
That's why I'm happy with the M71... no need for GPS as I've got navionics as a back up on my mobile.

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True NiMH cells don't catch fire anywhere near as frequently

COrrect storage is tricky but heat will kill them

How to Prolong Lithium-based Batteries - Battery University

This article interestingly suggests not storing flat (deep discharge can occur) or full.... but around 40%...
6 years of doing what I have been doing seems to have worked well.

Not sure about running flat but I'm sure that in the instruction booklet it tells you to remove the battery when stowing away for long periods.
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Old 19 August 2014, 02:17   #17
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Just have a read through all the similar threads, the general consensus is buy cheap, buy twice. Especially when it comes to handhelds.
Yeah!...Two's ALWAYS better than One!
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Old 19 August 2014, 05:16   #18
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+1 Cobra's are useless (in my opinion).

Took a floating Cobra with "Waterproof" moulded into the side in big letters with me on a MOB exercise, after a quick dunk as I went over and 5 mins in the water (but not submersed) it stopped working. Sent it back and bought the SH HX851E with DSC. No issues (to date).
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Old 02 September 2014, 06:15   #19
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I have a handheld but only on Windermere. If i start going to the coast, i will look at getting one fitted.
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Old 02 September 2014, 06:36   #20
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I've got an Icom M71 h/h which is a great bit of kit - it's easy to use for power setting, changing channel and calling but so complicated to set up for scans/channel naming/aquaquake function unless you use it every day so can remember what to press in what order!

But the intention was always to have that as the back-up/emergency so I've now bought a Lowrance Link 8 DSC fixed VHF - the Icom will stay in the grab bag as a ready use spare.

I'm half way through my fit of the fixed - I've fitted the antenna and run the cable through to the console, but I need to fit the radio into the console in my next bit of spare time.
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