myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website myHanse.com - Hanse Yacht Owners Website

Welcome to myHanse.com the forum for Hanse Yachts owners throughout the world.

Forum Home Forum Home > Hints & Tips > 385/388
  New Posts New Posts RSS Feed - Shore power battery charging
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Shore power battery charging

 Post Reply Post Reply
Author
Message
torridonyachtcharter View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 06 April 2017
Location: Loch Torridon
Status: Offline
Points: 17
Post Options Post Options   Thanks (0) Thanks(0)   Quote torridonyachtcharter Quote  Post ReplyReply Direct Link To This Post Topic: Shore power battery charging
    Posted: 06 April 2017 at 18:51
I have no instruction manual for the shore power system on our Hanse 385.  Please can anyone answer the following?

1. When connected to shore power, is Battery 1 or Battery 2 or both batteries, charged?

2. In which position does the Emergency Link switch link Battery 2 (service) to Battery 1 (engine)?

Thank you!
Bareboat yacht charter from Loch Torridon, Scotland, with Torridon Yacht Charter
Back to Top
RalphK View Drop Down
Commander
Commander


Joined: 08 July 2014
Location: Med,Spain coast
Status: Offline
Points: 118
Post Options Post Options   Thanks (0) Thanks(0)   Quote RalphK Quote  Post ReplyReply Direct Link To This Post Posted: 07 April 2017 at 21:55
Hello Nameless,

Both while on shore power as well while running the engine both the engine battery as well as the service battery or batteries if you have two in parallel will be charged.

With no external power the black switch box in the service battery compartment will disconnect the two banks, thus only the service battery will be de-charged.

If you in addition have a bow thruster it's battery is linked to the above system via a battery to battery (12 V - 12 V) Charger, I believe although it will take charge from the service battery it will not empty it.

In case your engine battery will be down (which should be rather unlikely) one can use the a/m switch box to reconnect engine battery and service battery, one has to take take off the short thin wire off and connect it to the other pin in the switch box. I am away from my boat, next week I can sent a photo.

Best

Ralph
SY Wind Pearl, Hanse 385#358
Back to Top
Boudicca3.0 View Drop Down
Sub Lieutenant
Sub Lieutenant
Avatar

Joined: 21 April 2021
Location: California
Status: Offline
Points: 16
Post Options Post Options   Thanks (0) Thanks(0)   Quote Boudicca3.0 Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2023 at 16:30
Hi Ralph,
Thanks for the clarification about the purpose of the switch box in the service battery compartment. 

I am about to add solar (Victron controller) and a victron Smartshunt to my boat and am a little puzzled about connections among the switch box, shunt, and controller. 

Should the shunt go between fused bus bar and the switch? 

Current wiring: 2 100 Ah lithium batteries wired in parallel, positive run to fused bus bar, bus bar and battery neg wired to the switch. 

Any clarification/suggestions are welcome!

Cathy 
Back to Top
RalphK View Drop Down
Commander
Commander


Joined: 08 July 2014
Location: Med,Spain coast
Status: Offline
Points: 118
Post Options Post Options   Thanks (0) Thanks(0)   Quote RalphK Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2023 at 20:31
Hi Cathy,

A shunt should always go in the negative leg, directly behind the batteries pole, no other connection between battery pole and shunt. The other side of the shunt continues a before.

The solar should go to the fused bar, better to have a flying fuse in that line, too.

By the way, are the LiPO batteries factory installed, or retrofitted? The switch should be replaced by a special LiPO charger. Your engine generator likely is set to charge lead batteries (I assume the starter battery still is lead?), charging of LiPO batteries require special parameters otherwise you will not benefit much for the advanced chargin& speed of a LiPO. Check the forum here, there are numerous post about LiPO settings.

Best regards

Ralph
SY Wind Pearl, Hanse 385#358
Back to Top
Boudicca3.0 View Drop Down
Sub Lieutenant
Sub Lieutenant
Avatar

Joined: 21 April 2021
Location: California
Status: Offline
Points: 16
Post Options Post Options   Thanks (0) Thanks(0)   Quote Boudicca3.0 Quote  Post ReplyReply Direct Link To This Post Posted: 03 December 2023 at 23:22
Hi Ralph, 

Thanks for your response. I got the shunt installed (while hanging at mooring balls at Angel Island State Park) over the Thanksgiving holiday. It is great to have more information about state of charge.

the LiPO batteries were retrofitted, and the starter battery is a high crank LiPO, too. I set all the MasterVolt charging parameters for LiPO (according to battery mfr recommendations). The switch, though, is still a challenge. It appears that it stays in "combiner" mode constantly, so it keeps balancing the service and house batteries, even if the house batteries are low. The working assumption is that the higher baseline voltage in the LiPO batteries is keeping the switch from ever hitting its "disconnect" threshold. 

So the question is with what should I replace the current combiner switch? Or is there a better answer?

We have verified that all the amperages, charging voltages, etc are within reasonable limits, both while charging via the alternator (Balmar 614 regulator set to LiPO) and via shore power. 

And for another oddity, the control panel reports incorrect voltage - oddly, 0.4 - 0.6 higher than the batteries measure and/or the shunt reports. Working theory is that the volt meter on the control panel is malfunctioning. Any other ideas?

Cathy 




Back to Top
RalphK View Drop Down
Commander
Commander


Joined: 08 July 2014
Location: Med,Spain coast
Status: Offline
Points: 118
Post Options Post Options   Thanks (0) Thanks(0)   Quote RalphK Quote  Post ReplyReply Direct Link To This Post Posted: 04 December 2023 at 14:44
Hi Cathy,

Good to hear that the shunt is working.

It is little strange, an overkill, to use a LiPO as starter battery. For this one could use a much less expensive conventional lead battery. I doubt that you will have any advantages from the LiPO, especially as the alternator is set to support a lead battery. 

Anyhow, in order to take best advantage of your LiPO service batteries and to solve the separation issue you will have to replace the switch by an advanced b-b charger with LiPO settings, e.g. one of these https://sterling-power.com/pages/high-powered-dc-dc-chargers.
This will separate the 2 sets and also gives you the full LiPO advantage of very high current charging while running the engine.

Although the alternator probably could supply 100 - 120 Amps you will risk to torment it too much, also the v-belt. Thus I suggest to use a 70 Amps model. This still will increase your charging by a big factor.

Take care.
Best regards

Ralph
SY Wind Pearl, Hanse 385#358
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.141 seconds.

Links : www.hanseyachts.co.uk www.hanseyachts.com www.fjordboats.co.uk www.dehler.co.uk www.varianta.co.uk