โApr-15-2020 12:29 PM
โFeb-25-2021 02:04 PM
โFeb-25-2021 09:30 AM
โFeb-25-2021 09:03 AM
โFeb-24-2021 06:36 AM
โFeb-24-2021 06:09 AM
Itinerant1 wrote:Itinerant1 wrote:
@pianotuna I finally installed the micro-air 364 on to my Carrier Air V 15k air conditioner. I'm in campground hooked up to 50a service, completed the 5 learning cycles. It was interesting to watch the me-arc display in the ac input screen, the air conditioner fan would run for a couple minutes then I could see 3-4a load coming in for 60 +/- seconds then quickly climb to roughly 18a then settle at 14a.
Here are the test that I did. While still plugged into the pedestal I turned the load share down 15a, 10a, 5a and turning the air conditioner off for a couple minutes between each lowering and at no time did the ac unit stumble or did a red fault light show on the me-arc.
Then I disconnected the the power from the pedestal and connected it to the eu2200i generator setting the load support to 15a and 10a, same results no red fault light on the me-arc and no "overload" or stumble on the generator. Also I'm in tree cover/ overcast so little to no solar was helping.
I didn't try the ac unit on just batteries but I'll bet there shouldn't be a problem especially if solar is contributing. In a couple weeks when I'm back at boondocking I'll update those results.
Maybe with the lfp batteries that's the difference that I'm not getting the fault lights on the hybrid inverter or stumble in the ac unit or generator. ๐
Countinous from previous post,
Tried the 15k A/C unit from just batteries today to see if the fault light would show on the Me-Arc display from the hybrid inverter (seeing if I would have the same issue that Pianotuna said he had). No fault light and no stumble in the A/C at anytime.
99% SOC (13.3v before turning the A/C on)
From the me-arc display:
Inverter AC output 118v/ 60hz
Overcast/ pine forest (no visible sun)
Solar 180.7 watts
PV volts 35.7vdc
Batteries 13.1vdc (while A/C running)
8a charging from solar after turning A/C off
Initially turning it on the fan started and after 30 seconds the compressor started to spool up slowly, I could see the amps slowly climbing and max somewhere in the 190a range before settling down to 94a. So if I just use my minimum loads and the sun is shinning the solar panels will cover roughly 60-75a of the A/C load, balance from batteries would be 30ah +/- (6% SoC be depleted per hour)
Good to know now that during a moving day and taking a break for lunch that the air conditioner can be used from the batteries with no issues and not worry about dragging the eu2200i out.
I'll use my infrared laser thermometer to check connection and wires next time after some extended use.
โAug-14-2020 10:14 AM
01tundra wrote:pianotuna wrote:Freep wrote:pianotuna wrote:
Unfortunately I need -40. There is at least one LI chemistry that can do that--but nothing in a large format jar. Lithium titanate
Do you really need -40? Do you have no water in your rig, only ice?
-40 will kill Li batteries. I've boondocked at -37 c (-34 f). That temperature will also kill Li.
I've since found a battery chemistry called SiO2 which shares many of the attributes of Li. The differences that I'm aware of at weight (greater than a similar capacity lead acid) and the ability to be used and charged at -40. Some of the shared items are no sulphation, and zero maintenance. That means no more needing to get to 100% state of charge.
The SiO2 is about 1/2 the price of Li. It can "do" 900 amps for 5 seconds from a 100 amp jar, which I think is better than Li.
Cycle life is 2800 if you don't go below 50% soc, and 1500 if you go down to 20% soc.
Best of all, the SiO2 are sold in Canada. $600 ($450 usd) for 100 amp-hours. This is a competitive price with AGM.
Mount the batteries inside the trailer?
โAug-13-2020 11:57 PM
โJun-11-2020 07:06 AM
pianotuna wrote:Freep wrote:pianotuna wrote:
Unfortunately I need -40. There is at least one LI chemistry that can do that--but nothing in a large format jar. Lithium titanate
Do you really need -40? Do you have no water in your rig, only ice?
-40 will kill Li batteries. I've boondocked at -37 c (-34 f). That temperature will also kill Li.
I've since found a battery chemistry called SiO2 which shares many of the attributes of Li. The differences that I'm aware of at weight (greater than a similar capacity lead acid) and the ability to be used and charged at -40. Some of the shared items are no sulphation, and zero maintenance. That means no more needing to get to 100% state of charge.
The SiO2 is about 1/2 the price of Li. It can "do" 900 amps for 5 seconds from a 100 amp jar, which I think is better than Li.
Cycle life is 2800 if you don't go below 50% soc, and 1500 if you go down to 20% soc.
Best of all, the SiO2 are sold in Canada. $600 ($450 usd) for 100 amp-hours. This is a competitive price with AGM.
โJun-10-2020 10:30 AM
Freep wrote:pianotuna wrote:
Unfortunately I need -40. There is at least one LI chemistry that can do that--but nothing in a large format jar. Lithium titanate
Do you really need -40? Do you have no water in your rig, only ice?
โJun-10-2020 10:16 AM
โJun-10-2020 10:11 AM
pianotuna wrote:
Unfortunately I need -40. There is at least one LI chemistry that can do that--but nothing in a large format jar. Lithium titanate
โJun-10-2020 07:41 AM
โJun-09-2020 07:05 PM
โJun-09-2020 05:41 PM
Itinerant1 wrote:
@pianotuna I finally installed the micro-air 364 on to my Carrier Air V 15k air conditioner. I'm in campground hooked up to 50a service, completed the 5 learning cycles. It was interesting to watch the me-arc display in the ac input screen, the air conditioner fan would run for a couple minutes then I could see 3-4a load coming in for 60 +/- seconds then quickly climb to roughly 18a then settle at 14a.
Here are the test that I did. While still plugged into the pedestal I turned the load share down 15a, 10a, 5a and turning the air conditioner off for a couple minutes between each lowering and at no time did the ac unit stumble or did a red fault light show on the me-arc.
Then I disconnected the the power from the pedestal and connected it to the eu2200i generator setting the load support to 15a and 10a, same results no red fault light on the me-arc and no "overload" or stumble on the generator. Also I'm in tree cover/ overcast so little to no solar was helping.
I didn't try the ac unit on just batteries but I'll bet there shouldn't be a problem especially if solar is contributing. In a couple weeks when I'm back at boondocking I'll update those results.
Maybe with the lfp batteries that's the difference that I'm not getting the fault lights on the hybrid inverter or stumble in the ac unit or generator. ๐
โJun-05-2020 05:24 AM
time2roll wrote:01tundra wrote:If plugged in running the air conditioner do you disconnect the battery or let it float at 14.6 for the full week?
We are running a PD4655L Wildkat converter set to the li setting.
It charges at a constant 14.6V until our single 100AH BattleBorn battery reaches 100% SOC. It starts out pushing 55 amps and then tapers off as the SOC gets higher, once the battery reaches 100% SOC the amperage tapers of to almost zero (usually around 0.25A or so).
I let it sit disconnected from the converter somewhere around 70-80% SOC and then charge it before we leave for the next trip, it charges so fast that it's no issue at all.