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Battery Problem

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Fendant View Drop Down
Admiral
Admiral


Joined: 03 November 2012
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 11 November 2018 at 04:51
Hi Bluesky,
 
maybe you give it a try by attaching a megapulse from www.novitec.de. There are some positive reports that it my refresh degenerated batteries ( one is in Palstek 4/2012 unfortunately in German ). Megapulse is around 50 € a piece.
 
On the net you find controversy discussion, 50% think that megapulse is battery voodoo. 50% think it saved them $$$'s. I can't explain the physics and the chemistry behind it. I used it on my last boat on standard gel batts, which were still ok after 8 years. I also heard a rumour that such a device is built into the Sterling chargers
Frank
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chrgra View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chrgra Quote  Post ReplyReply Direct Link To This Post Posted: 13 November 2018 at 22:17
I have constant battery issues.

After consulting a specialist,i got the advice to upgrade the standard charger to at least 15% of the capacity of the batteries eg 50 amp in stead of 30 or 35.

I will give it a try nexy season.

And of course I have a battery saver like fendant adviced, but be aware that the Vhf, bilge pump and one cabine light are directly connected to the batteries

Edited by chrgra - 13 November 2018 at 22:21
Hanse 385 Charlotte #363
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pdc78 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pdc78 Quote  Post ReplyReply Direct Link To This Post Posted: 12 December 2018 at 20:36
Dear Frank. Whilst I have yet to suffer battery problems on my 345 I am concerned to prevent excessive fridge discharge of the AGM bank and have ordered a 148A battery guard device to install during the close season. Please could you explain where exactly you have installed the device - under the fridge or on / behind the Wurth panel? A photo would be really useful. Thanks, Paul
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S&J View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote S&J Quote  Post ReplyReply Direct Link To This Post Posted: 12 December 2018 at 21:35
Installation of the battery guard is very simple. You can see from the pictures that there are two pairs of terminals, one marked "load" and the other "battery"
The device should be fitted close to the main switchboard. On my 385 I fitted it on the fold down door on the left (aft) side of the Wurth panel.
You need to identify the connection on the panel that is for the fridge. I am nowhere near my boat so can't help with that, but from memory it is also on the left (aft) side of the panel.
You simply need to disconnect this cable from the Wurth panel and attach it to the "load" terminals and then take a new cable from the "battery" terminals to the Wurth panel.
I can confirm that this device does the job but I have found the adjustment screw very crude and difficult to know what voltage will trigger the battery protection.

Edited by S&J - 12 December 2018 at 21:36
H458 #159 Primal Mediterranean cruising
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Fendant View Drop Down
Admiral
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 13 December 2018 at 06:14
Hi Paul,
Stuart has described the installation absolutely correctly. The easiest installation is behind the Würth panel. The grey/blue fridge plug is indeed on the left side of the PCB when you open the panel, it is on my boat the only one there. Here is a photo of my installation, my battery guard is velcroed to the right side wall.
I also struggled to find the right position of the adjustment screw. Finally I decided to set it to 75% of the whole range, hoping that this will disconnect the fridge at 12.5 Volts.
 
Frank
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Joey D View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey D Quote  Post ReplyReply Direct Link To This Post Posted: 03 January 2019 at 18:08
An help you can provide regard me engine not charging my service batteries?? Shore power works but not engine? Thanks
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Samtutuki View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Samtutuki Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2019 at 04:32
How do you know the engine driven charger is not working. What are the symptoms.
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Joey D View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey D Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2019 at 12:26
With engine running I put the amp meter on the house batteries and it stays at the same voltage, there is no increase. At the engine the alternator is sending out a charge. There starter battery is keeping a full charge.
Am I missing something simple? Thanks
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Fendant View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2019 at 12:37
Hi Joey, have you checked your VSR Relay ? 
 
This one should have a blue LED with the engine not running.
It needs a connection to the house battery ( this is sometimes "forgotten" when service guys decouple the batteries at the + terminal ).
 
 
 
 
Frank
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Joey D View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Joey D Quote  Post ReplyReply Direct Link To This Post Posted: 09 January 2019 at 15:06
Hi Fendant, Were is the VSR Relay located?  I looked by the batteries as well as behind panels and could not find?  Thanks Joe
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