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Service batteries, replacement

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IbSkaale View Drop Down

Joined: 18 September 2017
Location: Dubrovnik
Status: Offline
Points: 23
Post Options Post Options   Thanks (0) Thanks(0)   Quote IbSkaale Quote  Post ReplyReply Direct Link To This Post Topic: Service batteries, replacement
    Posted: 15 May 2019 at 14:21
Hi,I have Hanse 505/#135 from 2017 I use as leaseboat.
The service batteries seems to be close to dead.
I am looking for alternatives to the AGM batteries and can see an alternative are Lithium batteries.
Are there people here in the group there has exchanged AGM with Lithium?
Br Ib
Ib Skaale
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Black Diamond View Drop Down

Joined: 24 October 2015
Location: Newport, RI, US
Status: Offline
Points: 290
Post Options Post Options   Thanks (1) Thanks(1)   Quote Black Diamond Quote  Post ReplyReply Direct Link To This Post Posted: 16 May 2019 at 01:16
I found that the Victron batteries that were supposed to come with the boat had been substituted with some no-name battery at the factory.   How many people actually open the battery compartment and look at the side of the batteries to see what brand they are?    I didn't as I was focusing on more important things (I thought).     Then the first winter the boat was on land they just stopped taking a charge and showed their quality.

I had specified no substitutions and had a named product / brand list when I bought the boat.  To their credit, Hanse replaced them.   My guess is that you had an inferior battery installed.   My boat was a late 2017 delivery as well.

S/V Black Diamond
Hanse 575 Build #192, Hull# 161
Newport, RI
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Bjarne View Drop Down
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Lieutenant Commander

Joined: 25 June 2014
Location: Bergen, Norway
Status: Offline
Points: 71
Post Options Post Options   Thanks (1) Thanks(1)   Quote Bjarne Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2019 at 19:00
We killed our originally delivered AGM batteries before last season and replaced them with LiFePo4 Lithium batteries. We had 4 x 165 Ah AGM and replaced them with 2 x 200 Ah with 200 A BMS (Battery Management System), cutting the current at loads over 200 A. This is sufficient to supply the electrical winches, but if you run the winches at high load at the same time you with other big loads, you can risk cut off. In that case you will have "black ship" for 10 seconds or so before the BMS reenergize the batteries.

When installing the batteries, the only thing necessary to do is to change some settings on the battery chargers. I do not have details, as this was handled by the supplier when they installed the new batteries.

For us this has given us a complete new life onboard. The integrated bluetooth connection to the batteries gives me continuous overview over consumption and charging on my iPhone. Unlike to the the AGM batteries you can drain the batteries completely and recharge without damaging the batteries. The charging of the batteries is much quicker, and you will even have a quite high charging current when the main engine is running on idle speed.

With our experience, the recomendation is clear; install lithium batteries.

Good luck
Bjarne (H505 #072)
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