R27OB LiPO

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J

Jazzsea

Active member
Joined
May 3, 2021
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26
Fluid Motion Model
C-28
Hull Identification Number
FMLT2740K122
Vessel Name
Tortuga
Two questions for the technical team....
1. Initially when taking ownership of my R27 (February '22), the SOH readout on the Balmar monitor displayed @ 96%. Is this normal for new batteries? Shouldn't they be reading somewhere closer to 100%?
2. I'd like a copy of the wiring diagram for the LE. The current (and only) version of the manual does not show the LiPo config. Can someone from the factory post it online for the benefit of everyone?

Thanks
 
My R27 (June '21) also displayed a SOH of 96% when I got the boat.
No idea what is normal however.

I swapped out the Balmar for a Victron monitor and lost the SOH feature.
 
Jazzsea":2mkzyxl9 said:
Two questions for the technical team....
1. Initially when taking ownership of my R27 (February '22), the SOH readout on the Balmar monitor displayed @ 96%. Is this normal for new batteries? Shouldn't they be reading somewhere closer to 100%?
2. I'd like a copy of the wiring diagram for the LE. The current (and only) version of the manual does not show the LiPo config. Can someone from the factory post it online for the benefit of everyone?

Thanks
Click to expand...

The factory drawing and factory write-up can be found here. It's the same for all their LFP installs (Ranger and Cutwater outboard models).

https://www.letsgochannelsurfing.com/luxury-edition-lithium
 
Thanks Martin. Is this doc directly from the factory, or info compiled by yourself? Considering the number of boats which have come out of production, you would think the manuals would be published appropriately.
 
Jazzsea":156ujwzf said:
Thanks Martin. Is this doc directly from the factory, or info compiled by yourself? Considering the number of boats which have come out of production, you would think the manuals would be published appropriately.
Click to expand...

The drawing and write-up is from the factory. I got permission from Andrew to publish it.


Sent from my iPhone using Tapatalk
 
I take delivery of my 2022 R-27 in less than a month and was wondering if you might be able to tell me the make and model # of the factory solar panel and DC to DC charger? As I understand the wiring diagram Martin linked to there is no dedicated solar charge controller?

Thanks!
Jean-Guy
 
Bumping reply delayed in moderation queue.
 
On my 2021 R-27, the DC to DC charger shown in Martin's wiring diagram is a KISAE Abso DMT1250.
It includes a MPPT solar controller for the solar panel.
The DMT1250 is dual purpose. It can charge the batteries from either the Yamaha engine alternator or the solar panel.
 
bobmastors":kydtaj12 said:
On my 2021 R-27, the DC to DC charger shown in Martin's wiring diagram is a KISAE Abso DMT1250.
It includes a MPPT solar controller for the solar panel.
The DMT1250 is dual purpose. It can charge the batteries from either the Yamaha engine alternator or the solar panel.
Click to expand...

Appreciate the response. Are you running the factory solar panel? Do you happen to know the max amps you've been able to extract from just the solar panel with the Abso? I ordered an extra solar panel from the factory and am wondering what I can expect from the pair of panels, assuming they are both the same make/model as your factory panel(s?).
 
jeanguy":sa9ic1cw said:
Appreciate the response. Are you running the factory solar panel? Do you happen to know the max amps you've been able to extract from just the solar panel with the Abso? I ordered an extra solar panel from the factory and am wondering what I can expect from the pair of panels, assuming they are both the same make/model as your factory panel(s?).
Click to expand...

With a pair of 160 watt Custom Marine Products poly panels, that'd be 320 watts total via an MPPT controller.

During the summer time, I see over 2,000 watt hours daily from my 400 watt array. We go through at least 1,200 watt-hours (100 ah) daily.

Here’s some math of what you could probably expect out of 320 watts worth of solar.
This is based on Pacific Northwest weather that I have experienced last year with 400 watts of solar, adjusted down to 320 watts of solar.

Summer time, my high score for last season).
320 watts * 2700 watt-hours / 400 watts = 2,160 watt-hours. (+180ah)

Summer time, Sunny day. This is what I count on/expect most of the time during boating season.
320 watts * 2000 watt-hours / 400 watts = 1,600 watt-hours. (+133ah)

Early March boating in clear blue skies
320 watts * 1000 watt-hours / 400 watts = 800 watt-hours. (+68ah)

September, pouring down rain all day
320 watts * 570 watt-hours / 400 watts = 456 watt-hours. (+38ah)

January, in the FOG all day
320 watts * 250 watt-hours / 400 watts = 200 watt-hours. (+16ah)

Watt-hours divided by 12 volts equals amp-hours.

Also note, you don’t necessarily even need solar to meet 100% of your daily needs. If it met 80%, your battery bank would make up the difference and your time away from shore power increases.
 
Submariner":hzwrly74 said:
...
Here’s some math of what you could probably expect out of 320 watts worth of solar.
This is based on Pacific Northwest weather that I have experienced last year with 400 watts of solar, adjusted down to 320 watts of solar.
...
Click to expand...

That's some great info, thanks much!
 
The factory drawing and factory write-up can be found here. It's the same for all their LFP installs (Ranger and Cutwater outboard models).
https://www.letsgochannelsurfing.com/luxury-edition-lithium
Click to expand...

Martin, Regarding the factory LFP drawing you posted, are the Thruster and Engine batteries still AGMs, and if so, how does the Kisae Abso AC to DC charger handle the different chemistries when charging all three banks?
 
sgeary":2plvx9u8 said:
Martin, Regarding the factory LFP drawing you posted, are the Thruster and Engine batteries still AGMs, and if so, how does the Kisae Abso AC to DC charger handle the different chemistries when charging all three banks?
Click to expand...

The thruster battery is AGM deep cycle, the engine battery is an AGM starting battery (900 CCA).

The 60 Amp KISAE ABSO battery charger supports LFP on bank1. Bank 2 and 3 must be the same battery chemistry, but can be configured different than bank 1. Thus, bank 2 and 3 are configured for AGM.

In addition, there is an ACR between the engine and the thruster bank. When the battery charger is running on the engine battery or the thruster battery, charge voltage goes up, the ACR closes, paralleling the engine and thruster banks together.
 
The Abso charger is a 3 bank charger that allows you to set the house bank chemistry (bank 1) and then the chemistry of the other two banks (2 and 3) with two different charging profiles. Note that 2 and 3 have to use the same profile. The charger prioritizes Bank 1, and then begins charging 2 and 3 once Bank 1 reaches float stage.

Pre-LiFePO4, with matching chemistries on all banks, ACRs were also used to charge all the banks as one when a charging source was detected. Not sure if the DC-DC charger does this unless the engine is running. Martin will know that answer.

And it looks like Martin and I were typing at the same time.


Sent from my iPhone using Tapatalk
 
CruisingElvinRay":293w5byc said:
Not sure if the DC-DC charger does this unless the engine is running. Martin will know that answer.
Click to expand...

There's an ACR between the engine and thruster battery.
There's a VSR (voltage sense relay) between the thruster battery and the DC to DC charger (DMT1250).

Turn on the battery charger, when it cycles around to the engine or thruster battery, charge voltage is applied. The ACR will see that and will close, paralleling the engine and thruster battery banks. Then the VSR will sense the charge voltage and close. That allows current from the battery charger connected to the engine or thruster battery, to jump to the thruster battery, then across the VSR to the DC to DC charger which would apply charge to the LFP house bank. I believe it's a BEP Digital Voltage Sense Relay that's installed.
 
As a soon to be second owner of an r27ob with lipo, does anyone have the model number,or link to the manual, for the balmer readout/system ? Seems I've used up my allotment of factory support.
 
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