MRC-148 Battery Drains

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MRC-148 Battery Drains

Postby jagers25 » 02 Nov 2018, 08:37

Here at my unit we have a decent amount of MRC-148 radio in our M1123's. For some reason every single one of them has a battery drainage problem. Every time I go out to move one the batteries are dead and my COMM-ELEC guy has no idea why either. Does anyone have a clue as to why the batteries would drain?
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Re: MRC-148 Battery Drains

Postby SUPERMOD » 03 Nov 2018, 16:06

I dont know if this is the right answer (motor T gods correct me) but we used to always keep the solar trickle chargers hooked up to our MRC vics. At an I&I unit where we left them alone for 30 days at a time, they were always dead until i did that. Let me know.
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Re: MRC-148 Battery Drains

Postby jagers25 » 05 Nov 2018, 09:16

Would you happen to have any information on the solar charger? I know there is a solar charger MOD on the Generators that I have installed before. Would it possibly be the same?
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Re: MRC-148 Battery Drains

Postby SUPERMOD » 06 Nov 2018, 06:24

I believe it is the same thing, but I will ask around to make sure.
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Re: MRC-148 Battery Drains

Postby SUPERMOD » 06 Nov 2018, 13:19

https://thirtyfive21.slack.com/files/UD ... om_ios.jpg

You will need to download the slack app on your phone. I posted your same question there and got a response in seconds.
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Re: MRC-148 Battery Drains

Postby Grandpa3523 » 21 Dec 2018, 08:12

I am going to echo SuperMod, load the mobile app. I looked for you and this post on there and couldn't find it with a quick look, will dig more later.

About your power hungry monster, look on the comm tower, you will see a small box with a switch, it may say something like "ANTENNA". It has been a long time since we had this problem, but using a test light or fluke meter, test those connections. I think you will find that there is a draw/battery voltage present. To verify if this is it, use the same draw test you would do at the shunt for a glow plug test or use the fluke at the battery in the amps setting for the parasitic drain. BE CAREFUL ON THE SETTING SO YOU DON'T BLOW FUSES IN THE METER. Make sure the fuses are good and the person who had it before you didn't blow them and not say anything or even knew they had blown them.
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