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Engine starter battery relocation.

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charentebob View Drop Down

Joined: 09 April 2014
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Points: 368
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    Posted: 18 April 2017 at 20:32
Our boat was 3.5 years old when the engine starting battery had less than 45% capacity remaining. This poor performance is down to 2 factures I believe. 1) Wrong choice of battery & 2) wrong location.

To deal with item 2 first. The battery is located by Hanse in the worst possible location you can imagine. Batteries perform best when cold or cool & worst when hot. So to ensure PPF Hanse stick the battery in the engine compartment, the hottest place in the boat. This is nearly beyond belief. I have had the new battery relocated to left of the water heater beneath the berth in the port rear cabin. Whilst the water heater emits some heat it is nothing compared with the engine compartment. In addition it is in a closed battery box. The good news was that no alteration was needed to any of the cables attached to the battery. A new battery isolation switch was required & this was located in the face of the berth support panel in the top left hand corner facing the cabin door. The fuse holder was positioned to the right of the isolation switch but on the inside face beneath the berth.

Replacement battery. The original 90amp hour AGM was replaced with a 75 amp hour Victton sealed lead acid starter battery. It is also significantly cheaper than an AGM. It has a 6greater CCA ability than the original spec AGM. The AGM is not best suited to being a starter battery. Hopefully our tale of electrical woes of 2015 can remain history as I don't want to revisit them again this summer.

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