2008 - we couldn't last on the batteries, no matter what my 3 x 105Ah batteries would not give me the service we expected. Note there were 2 hidden issues which I discovered and are noted below.
Over the winter I rebuilt the supply side of the system :
- 440Ah Lifeline AGM deep cycle bank.
- New 50 amp Charles 3 stage 110v charger
- New 6AWG cables from charger to house bank
- Rewired alternator to charge the house bank (again through new 6AWG)
- charge flooded gp31 starting battery via Balmar duo charge from house
- charge Lifeline AGM Bow thruster battery via Balmar duo charge from house
- Install Xantrex Link pro to monitor house
- Honda EU2000i generator for charging at anchorage without running auxilliary
- had faulty OEM alternator rebuilt (rectifier?, diodes ...y
Have now used the boat 8-10 weekends and 2 separate full weeks of cruising. Here are my observations :
- alternator must have not been charging last year, I must have been charging on shore power only
- my estimates on current dray (90-110 a day) are reasonable, refrigeration/freeze (24/7) is the biggest draw easily taking 70 amps a day, more if it's hot or we open frequently or the box isn't full
- link pro gives me a very good view (I know it's not exact) of amps in, amps out amps used and amps remaining. Its a valuable tool. I have been noting state in log along with position etc, also making periodic notes in the log whilst at anchor.
- both the rebuilt alternator and the 110v charger will initially put 45A into a depleted bank, but this drops off to the mid twenties and then the teens. This confirms what this group advises on acceptance rate. When the charge rate drops below 14A I stop charging unless I am heating water or motoring.
- getting back to 100% is very difficult without prolonged running of generator or motor sailing, however high 80's is very feasible. We get back to 100% at the dock, usually within 12 hours.
- the lowest we dropped after a 44hr period on a mooring without charging was 68% this was with fridge / freezer running 24/7 and OEM halogen lights, stereo, etc freely used. If we were buring lights until midnight I would have marinebeam led's in there, but we are not, we are usually using less than 90 minutes of cabin lights a night
- when the battery charger is pumping out anything over 25A I cannot run the water heater and the battery charger on the generator (it trips the overload protection)
- swim platform is fine for the generator, I have it securely tied off to the stern rail in case of an errant boat rocking from a passing wave. With the unit at a slight angle I can direct the exhaust over the edge of the swim platform and either down to the water or round the side of the boat dependoing on wind. None of the detectors on the boat go off (we have 2).
- the generator does need 20 minutes to cool down before I feel comfortable putting it back in the lazarette. Also it has started first time, every time and is a one handed lift, even with a full tank.
- ECO mode on the generator keeps both the noise and the fuel consumption down (noise is high when water heater is on)
- I discovered a loose ground connection on the 100A ground fuse, it was getting really hot - I am sure this was causing some capacity loss as electrical energy was converted to heat (isn't this boyles law or something?)
- the duo charges work really well - "set it and forget it"
- a faulty alternator regulator will flatten a starting battery in less than 24 hours (this was before I finished that part of the work. It will also get very hot
Of this, I would rate the Link pro and the EU2000i as the highly recommends. The duo charges and the lifelines seem high quality but its probably too early to say.
Future improvements ?
- External regulator on the alternator or maybe a balmar 75A. So far, touch wood, that's it !
For now :)
Bottom line -I am very happy
Sent via BlackBerry by AT&T
Mark,any Idea ofthe cost to get to this point ????
Bill
Subject: {Beneteau Owners} Recap and review - Calypso electrical upgrades
Sent via BlackBerry by AT&T
Sent via BlackBerry by AT&T
From: bau...@comcast.net
Date: Wed, 29 Jul 2009 12:07:59 +0000 (UTC)
To: <Benetea...@googlegroups.com>
Subject: {Beneteau Owners} Re: Recap and review - Calypso electrical upgrades
Thanks.
Bill
----- Original Message -----
From: "mark wilme" <mark....@gmail.com>
To: "Beneteau Owners" <Benetea...@googlegroups.com>