yes there is certainly a lot of adapting and learning involved with the changeover. I've cooked an Electomaax 160amp alternator due to dumploads involving a large solar bank and high output alternator not talking firmware has now been updated with the WS500 to deal with such issues. I installed a 3" blower, blowing directly onto the alternator and 4" pulling air from the area, this along with the windings design on the Balmar and the twin internal fans see me charging at over 100 amps to almost full charge.i now only charge to around 96-98% soc to avoid the dumploads.
Another Lithium conversion ... Hunter 49 Schematic
- Thread starter tkwhalen
- Start date
The best option I have seen to avoid the dump load to the diodes due to HVC is to lower the regulator's absorption voltage to a level where the regulator will cut output well before the BMS does. If you set to 14.2v you can handle a 100mv imbalance. if your cells have a greater imbalance than that, you should reduce the absorption voltage further. On my battery, I have never seen more than a 10mv imbalance, so I am very safe at 14.2v and that is high enough to keep the AGM start battery happy.
The 49 & 50 are wired the same.
The difference is that the breaker panels on the 50 are above the helm chair, and on the 49 below.,
They basically connect through the same multitude of AMP connectors.
The Magnum unit is the charger / inverter.
There is only one shunt for all of it, which measures amount of charge, or how much current you are consuming.
From thus it determines SOC (state of charge), through peukerts equation.
The generator does not go through the inverter.
there are high capacity relays which select either shore power or genset.
If neither are on, the inverter can supply power
hope this helps
@tkwhalen Kevin - Attached are some pics of how I mounted my solar panels to my H49 davits. I mounted the panels astern enough to allow for my winter canvas cover to still be used. The panels sit outside of the cover as shown in one of the pics. There is also a pic of when I was fabricating it using ratchet tie downs to assist in holding things in place.
Attachments
These pictures are very helpful. I want to mount mine in a similar way. Did you have all of the hardware to do it fabricated or buy it off the shelf from some where? Any issues in heavy wind that you have noted?
I purchased the tubing from Defender. Connectors from various on-line sources - US Marine Canvas (best source I found for 1x 2" Stainless Steel Hinged Jaw Slide), Amazon, Wholesale Marine are the ones I remember. The array has been through two seasons and I have not had any problems with high winds. I am on a mooring or at anchor most of the time when not sailing, so wind is typically from the front. If I were on a fixed dock in an area prone to high winds, I might add additional support on the aft part of the panels. Highest wind sailing has been 35 knot gusts with no issues that I experienced but I was probably focused on other things the time, LOL. Panels are fixed in the level position reducing windage.
Feel free to reach out with any other questions or if you need additional pics. I'm sure my design can be improved upon but it's worked well for me and I was able to fab and install myself.
Feel free to reach out with any other questions or if you need additional pics. I'm sure my design can be improved upon but it's worked well for me and I was able to fab and install myself.
I just saw this source, The Chandlery on a Hunter owners Facebook post yesterday. They are in Ontario and look like they have a good selection of fittings and tubing. May be a good source for you. Rail fittings and tubes and parts in stainless steel and aluminum : Marine supplies for power and sail - The Chandlery
We are in the middle of tracing out our wiring for the same purpose. We're looking to set up a plan to switch over to lithiums. I have a couple of specific questions that came up today.
1. While working with the wires behind the switch panel under the starboard settee, I noticed that the relay for the electric winches was warm to the touch. Is this a sign that it should be replaced? For comparison, there is another similar relay right next to it that is not warm.
2. While testing to see what the relay was connected to, I pulled the red wire from the back of the relay, and the automatic battery switch located under the settee clicked. It clicked again when I put the wire back. Is the automatic switch there only to allow the winches to function, or is there another purpose as well?
1. While working with the wires behind the switch panel under the starboard settee, I noticed that the relay for the electric winches was warm to the touch. Is this a sign that it should be replaced? For comparison, there is another similar relay right next to it that is not warm.
2. While testing to see what the relay was connected to, I pulled the red wire from the back of the relay, and the automatic battery switch located under the settee clicked. It clicked again when I put the wire back. Is the automatic switch there only to allow the winches to function, or is there another purpose as well?
The Magnum is the Magnum Energg charger/inverter
The shore power does switch through the inverter, but the genset doesn’t , as it’s 220,
In the AC breaker box next to the nav seat, there are 2 high current relays which select either short power or genset.
The inverter has internal relays which decide wherever to output 120v from the inverter, or one of the shore phases.
None of the onboard 220v items will work off the inverter. (Airco, hot water)