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Old 01-03-2020, 11:19 AM   #1551 (permalink)
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Originally Posted by DE Jeeper View Post
Dyi load test is as followed.

Seperate the batteries and read the voltage when u try and start the truck. I bet one drops like a stone.
Starter only pulls from the pass side if the crossover is taken off. I'm sure some jumper cable rigging is possible.....
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Old 01-03-2020, 03:49 PM   #1552 (permalink)
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Starter only pulls from the pass side if the crossover is taken off. I'm sure some jumper cable rigging is possible.....
Leave the crossover on the positive side and pull the negative cable off of the passenger side. Then it will be forced to pull from the drivers side.
IIRC, our 7.3L van would start from the good battery (sometimes just barely), but would not start from the weak one (in above-freezing temperatures).

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Old 01-03-2020, 05:03 PM   #1553 (permalink)
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Is the BMV 712 Ah capacity set correctly?

You definitely should get more than 5 amps of charge on the genny.

Does the battery voltage jive with AGM SOC charts?
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Old 01-03-2020, 05:08 PM   #1554 (permalink)
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Is the BMV 712 Ah capacity set correctly?

You definitely should get more than 5 amps of charge on the genny.

Does the battery voltage jive with AGM SOC charts?
Yep it's set to 500ah.

Actually o think I bumped it down to 300 after last weekend.... Just to keep my percentages more in line....

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Old 01-03-2020, 05:21 PM   #1555 (permalink)
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Details:

Nespresso c91 (label on bottom says 1260w, verified with kill a watt)
Tripp Lite 1250 w inverter charger
500ah AGM bank
Dual alternators, 240 {iirc} output

Inveter Overload cutout. It ran through machine for a few seconds.

Batteries were fresh off charger, 13.6 ish

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Is this 500ah bank labeled as 1000ah? With AGM i understand you can only get 50% of the bank rating. Wet cells can go to 80% but at reduced life cycles. If you have a 4x 250Ah 12v pack you only really have 250ish AH of useable capacity? No idea how the BMV handles lead acid AH% or if it has to be compensated by the users own limit.

I bought the $99 GC2 flooded cells but I understand the issue of them being vented and all in the interior.

Too late to take advantage of that 30% renewable energy tax credit for 2019, wink wink? Drop some BattleBorns in there

I couldn't find the picture of the bank because "array" but I did find this quote so forgive me here if I am all wrong.
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Old 01-03-2020, 05:24 PM   #1556 (permalink)
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Is this 500ah bank labeled as 1000ah? With AGM i understand you can only get 50% of the bank rating. Wet cells can go to 80% but at reduced life cycles. If you have a 4x 250Ah 12v pack you only really have 250ish AH of useable capacity? No idea how the BMV handles lead acid AH% or if it has to be compensated by the users own limit.



I bought the $99 GC2 flooded cells but I understand the issue of them being vented and all in the interior.



Too late to take advantage of that 30% renewable energy tax credit for 2019, wink wink? Drop some BattleBorns in there



I couldn't find the picture of the bank because "array" but I did find this quote so forgive me here if I am all wrong.
Yes it's 250 useable. I try to keep percentage well above 50. It was saying 80 ish last time Batts were at 10v. Something was whacky. I reset everything when batteries had been on charger for two days.


Current state. Just parked.

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Last edited by Java; 01-03-2020 at 05:26 PM.
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Old 01-03-2020, 05:38 PM   #1557 (permalink)
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Per the fullriver manual 50% is 12.20 volts, does that jive with your usage?
This is resting voltage not under any load.
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Old 01-03-2020, 05:42 PM   #1558 (permalink)
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I am just thinking if you had a healthy house bank you could always jump yourself off and not damage a $$$ house bank.

In the summer I used a ton of power, 1400ish Wh per day. Just running my furnace over night has me to %50 so its hard for me to compare to blizzard winter conditions.

Minimal charging for me would be hard after 2 days but I have a 210ah (150ish useable) bank.
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Old 01-03-2020, 05:46 PM   #1559 (permalink)
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I am just thinking if you had a healthy house bank you could always jump yourself off and not damage a $$$ house bank.

In the summer I used a ton of power, 1400ish Wh per day. Just running my furnace over night has me to %50 so its hard for me to compare to blizzard winter conditions.

Minimal charging for me would be hard after 2 days but I have a 210ah (150ish useable) bank.
Yes that's true. But they work ok still, I'd rather do the starting batteries....

I burn 50-60ah a day in the winter.

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Old 01-06-2020, 09:54 AM   #1560 (permalink)
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For sure if you need start batteries then you need them.
I was just suggesting in lieu of a "jump pack" get your house batteries in order so you can A. not damage your $1500 bank and B. jump yourself if if needed.

12.2v is 50% DOD/SOC, 11.61 is 10% so at 10.xx volts they are deeply discharged. Lead acid batts aren't a fan of that.
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Old 01-06-2020, 11:47 AM   #1561 (permalink)
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For sure if you need start batteries then you need them.
I was just suggesting in lieu of a "jump pack" get your house batteries in order so you can A. not damage your $1500 bank and B. jump yourself if if needed.

12.2v is 50% DOD/SOC, 11.61 is 10% so at 10.xx volts they are deeply discharged. Lead acid batts aren't a fan of that.
Ah I see.

Yes I always try to stay above 50% SOC. Something fishy was up as my meter was still showing 75-80ish percent (I dont remember the exact number at this point) but the voltage had tanked over night. It was saying I had only pulled ~130Ah out. I did idle the truck, and it was charging at 20ish amps, but maybe that screwed things up meter wise?

I will do the start/voltage test on the batteries this week if I can get the kid to help me start the truck


Played ski cabin all weekend.


Snow did not suck.


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Old 01-07-2020, 09:02 AM   #1562 (permalink)
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That really kicks ass, no way my family is down for that but I'd love it.

???? how does the Wilson booster antenna work down there on the hood?
I bought the cheap one with the little magnetic antenna, can't tell it does anything...
My buddies have the big Wilson and they work great but I didn't want the antenna 4' in the air like they have them.
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Old 01-07-2020, 09:08 AM   #1563 (permalink)
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That really kicks ass, no way my family is down for that but I'd love it.

???? how does the Wilson booster antenna work down there on the hood?
I bought the cheap one with the little magnetic antenna, can't tell it does anything...
My buddies have the big Wilson and they work great but I didn't want the antenna 4' in the air like they have them.
Kiddo has skied since she was 2.5 years old, she doesn't have a choice not to come

Uhhhh its only down there because I broke it off on some tree branches..... And it seems you can't get parts from Wilson, only a whole new antenna kit (with spring now.... ) for like $70. I have not wanted to spend the $$ yet.

Yes the big OTR antenna works much better than the little mag mount. I have both. But you should look at a directional, they are supposed to be even better, but take some set up/aiming.

This is the road that claimed the antenna. At least just the CF tube broke I guess. I got tight....
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Old 01-07-2020, 09:28 AM   #1564 (permalink)
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Yeah I can see the problem LOL.


Any thought about a Victron Smart Battery Protect to keep the bank from crashing?
I am thinking I am going to put one on my system so I can have some dumbass insurance...
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Old 01-07-2020, 11:36 AM   #1565 (permalink)
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Yeah I can see the problem LOL.


Any thought about a Victron Smart Battery Protect to keep the bank from crashing?
I am thinking I am going to put one on my system so I can have some dumbass insurance...
Yes and no. My BMV already has an alarm in it, I just needed to set it to something other than 10v....

I dont know if there was a dead cell, or a frozen batt, but it did crash quick. There isn't much load at night, just the heater occasionally, which it turns out cant ignite the glow plug enough at ~10.5V.....
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Old 01-14-2020, 12:06 PM   #1566 (permalink)
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What a nutty weekend. Headed out late on Friday, with a big storm coming in.

Did not make it very far.... Highway closed. Tree fell and a car hit it. But they cleared in about an hour.


Made it to the pass as it was nuking snow. Parked finally.


Get up early! We got 4th chair Sat and 6th Sunday. Line gets big!


It didn't stop snowing..... This was Sunday 7am


So much snow!!



And then this..... Pass closed in all directions. I guess we are spending another night..... At least we have a nice spot to sleep, unlike the employees.... WSDOT did take a group down Eastbound, but quite a few slept in the lodge.


We moved to a different spot, and got a bunch more snow. This was Monday morning now. Luckily I just had to shovel the windshield and hood, and was able to pull right out of that spot. 4x4 low FTW! Waited for a couple hours in the morning, hoping they would open the road, but after talking to a truck that had run the West side it wasn't happening. Trees down, lots more threatening to fall. A car hit by a tree. Semi truck out of gas, no power, no gas. They did open East, so we started the long trip home.... Big loop with two more passes, but it was the only real option. Pass is still closed.


Stopped to shovel the roof off. The truck felt REALLY heavy with that up there.



Made it home finally. Truck is filthy from all the road grime.... Long trip, but great skiing!
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Old 01-14-2020, 04:39 PM   #1567 (permalink)
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Sounds like a awesome trip to me! That’s a ton of snow
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Old 01-15-2020, 11:09 AM   #1568 (permalink)
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Sounds like a awesome trip to me! Thatís a ton of snow
Not a bad way to spend a weekend at all!
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Old 01-15-2020, 11:25 AM   #1569 (permalink)
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That snow looks awesome!

Any luck with the house bank? Voltages tracking AH usage?
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Old 01-15-2020, 11:26 AM   #1570 (permalink)
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That snow looks awesome!

Any luck with the house bank? Voltages tracking AH usage?
It was awesome! Really nice and light.

Nope, I was plugged in all weekend
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Old 01-16-2020, 02:17 AM   #1571 (permalink)
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Kiddo has skied since she was 2.5 years old, she doesn't have a choice not to come

Uhhhh its only down there because I broke it off on some tree branches..... And it seems you can't get parts from Wilson, only a whole new antenna kit (with spring now.... ) for like $70. I have not wanted to spend the $$ yet.

Yes the big OTR antenna works much better than the little mag mount. I have both. But you should look at a directional, they are supposed to be even better, but take some set up/aiming.

This is the road that claimed the antenna. At least just the CF tube broke I guess. I got tight....
Glad to see this build with the height mentioned. I'd totally take my bus through the woods just like that once I have all three axles set up for steering. And your snow pics still make me wanna get out of rural CO to go play so hard.
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Old 01-16-2020, 08:51 AM   #1572 (permalink)
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How do you get to be plugged in at the slopes? That sounds perfect.
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Old 01-16-2020, 09:08 AM   #1573 (permalink)
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Glad to see this build with the height mentioned. I'd totally take my bus through the woods just like that once I have all three axles set up for steering. And your snow pics still make me wanna get out of rural CO to go play so hard.
It was a fun challenging afternoon on that road. Had to turn 180 degrees around at one point....


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How do you get to be plugged in at the slopes? That sounds perfect.
Stevens pass has an "RV Lot" they charge, but have hook ups. Its pretty slick. Pretty much as close as you can park to the main area, and can ski right back to the truck through the woods above the lot.
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Old 01-16-2020, 10:38 AM   #1574 (permalink)
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That sounds awesome!
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Old 01-19-2020, 01:13 PM   #1575 (permalink)
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Ok batteries are real tired.....

Pulled 101ah out. Was sitting at 12.2v with minimal load, and dropped to 11.9 anytime a decent load (heater or fridge) was applied.

Victron gauge is funky. 101ah pulled out, but was saying 86% bank left? I only have 500ah total.

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