Anker 767 Pass-Through Charging?

Scider · Feb 23, 2023

I have a Honda EU2200i generator in case of an outage now, and was looking at an Anker 767 as a possible addition to my home power backup setup. I had envisioned a 4 kWh Anker setup next to my transfer switch in the basement, then rewiring the generator input as a way to charge it back up during an extended outage. Effectively a rechargeable UPS.

I've been watching YouTube and scouring Amazon reviews, but all I've found is a few anecdotal references that it does allow pass-through charging. The user manual indicates a max AC input of 1440W (120V 12A), a max bypass of the same. I'm trying to find out if I'm drawing less than 1440W to power the critical loads, would the excess charge the battery?

Anyone have a 767 and tried something like this before?

watchdoc · Feb 24, 2023

I'm pretty sure it operates in a UPS mode and will pass through the AC but I'll do some testing for you. Anker doesn't call it "pass through" but rather "bypass mode". I"m not sure if it's bypassing the battery, the inverter, or both but that's what they call it.

watchdoc · Feb 24, 2023

This is a pic of charging my Leaf. The battery stays at 100% and the fans don’t rev up so I’m guessing this is bypass mode. You still have to turn the inverter on for the unit to bypass.

Bud Martin · Feb 24, 2023

Do you have to set the mode to UPS? or if you plug it to the AC outlet it will go to UPS mode?
The UPS mode is confusing, at time stamp 3:50 he said Bypass mode capable of bypaasing up to 1400W, according the the video, you can adjust AC charging power (in this mode, will it be consider as UPS?), so lest say you set it to 500W and you trying to run 800W load, or set to max and try drawing more than 1400W, what will happen?
@11:40

watchdoc · Feb 24, 2023

Bud Martin said:
The UPS mode is confusing, at time stamp 3:50 he said Bypass mode capable of bypaasing up to 1400W, according the the video, you can adjust AC charging power (in this mode, will it be consider as UPS?), so lest say you set it to 500W and you trying to run 800W load, or set to max and try drawing more than 1400W, what will happen?
@11:40

Gimme a minute and I"ll let you know..... Edit, long story short…. Nothing happened. I changed the charge rate to 500 watts while still charging the Leaf at 1400 watts and it just kept charging. I turned the inverter off and back on a few minutes later and it resumed charging at 1400 watts. I’m guessing the BYPASS limit and the RECHARGE setting can be different. There is no setting for UPS.

Bud Martin · Feb 24, 2023

So it means that if you have it plugged into the utility, you cannot draw more than 1400W (it is in true bypass mode with ATS connecting AC input right out to the AC outlets that is why setting charging rate does not have effect on the output) even though it has 2400W inverter, you can draw 2400W if it is not plugged into the AC outlet and it does not have pass trough charging with utility but it can do pass through charging with solar if I am correct, the user manual is not really clear either.

watchdoc · Feb 24, 2023

Makes sense to me.... Utility power can supply 1400ish watts of bypass power which is equal to the amount the AC charger can provide., anything above that and the inverter needs to kick in and make up the difference from the battery.

Edit: further testing proves the unit will not bypass more than 1440 watts (for very long) while the AC is plugged in. If you eceed this limit by more than 40-50 watts, you would get an AC overload error and the unit will turn off the inverter.

Bud Martin · Feb 24, 2023

watchdoc said:
Makes sense to me.... Utility power can supply 1400ish watts of bypass power which is equal to the amount the AC charger can provide., anything above that and the inverter needs to kick in and make up the difference from the battery.

Does it do pass through charging if you use solar charging?

watchdoc · Feb 24, 2023

Bud Martin said:
Does it do pass through charging if you use solar charging?

If the battery is at 100%, the solar will show 0 input. If you add a load, the solar won't kick in until the battery drops to 99% at which point, it will try and meet the load and charge the battery back to 100%. It's worth noting that charging is limited to 230ish watts from 1% until it reaches 3% and charging begins to taper off at the battery gets close to 100%. I"m sure someone could plot a charging curve.

watchdoc · Feb 24, 2023

I haven't tried your specific scenerio since I currently don't have a transfer switch but I have charged the Anker from my Champion 3400 watt generator WHILE I was also powering some loads. If there is a specific scenerio you would like me to try, lemme know but the Anker doesn't care if it's getting AC from the wall, a generator, or another inverter.

If your goal is to recharge the Anker from a generator WHILE you are connected to a manual transfer switch and powering critical loads, it should work fine but keep in mind the floating ground issues that solar generators come with. The Anker expansion battery is also very expensive. By the time you buy the 767 and the expansion battery, you could have purchased the much more capable EcoFlow Delta Pro. The biggest advantages of the Anker is portability and how quiet it is which makes it perfect for point of use scenerios like in your kitchen or living room during a power outage. I put it this way to people. The EcoFlow Delta Pro is moveable. The Bluetti AC200MAX is luggable. The Anker 767 is Portable and really the only one that one person and easily move and lift.

EDIT: AC charging rules apply while charging from generator as well. If you exceed 1440 watts for very long, the unit will give an AC overload error and the inverter will shut off.

watchdoc · Feb 26, 2023

Bud Martin said:
Does it do pass through charging if you use solar charging?

Made a video demonstrating the bypass limits

Bud Martin · Feb 26, 2023

Great video! Thanks for testing that function.
So it does true bypass mode as you have shown that the inverter is not on, I saw the other youtubers say that the inverter has to be on in bypass mode to get AC outpur, that is why I was confused when I read their comment.

watchdoc · Feb 26, 2023

Bud Martin said:
Great video! Thanks for testing that function.
So it does true bypass mode as you have shown that the inverter is not on, I saw the other youtubers say that the inverter has to be on in bypass mode to get AC outpur, that is why I was confused when I read their comment.

The inverter does have to be on although I think it's just turning on the outlets and not actually doing any inversion. If you turn the inverter off, the outlets are dead.

Dabramzon · Mar 7, 2023

watchdoc said:
The inverter does have to be on although I think it's just turning on the outlets and not actually doing any inversion. If you turn the inverter off, the outlets are dead.

Thanks for the super helpful video and comments. I am trying to run my 767 as a UPS which I assume functions the same way as bypass. I have it plugged into AC and then my computer plugged into the AC out. Everything seemed to be working fine but after a few days the battery is showing at 97% (started at 100% a couple of days ago) and its slowly charging back up while still feeding the computer (charging at about 75W, computer draws 60 W when sleeping). This is surprising to me since I would have expected the battery not to lose any charge when acting as UPS / bypass. Any experience with this? Is there something I need to do to put it in UPS / bypass mode or is this default if its simultaneously plugged into wall and load where load is < 1440W? My concern is that its not actually working as a bypass at the moment but actually pulling from the battery to feed the computer and then topping it back off from the AC.

watchdoc · Mar 7, 2023

Dabramzon said:
Thanks for the super helpful video and comments. I am trying to run my 767 as a UPS which I assume functions the same way as bypass. I have it plugged into AC and then my computer plugged into the AC out. Everything seemed to be working fine but after a few days the battery is showing at 97% (started at 100% a couple of days ago) and its slowly charging back up while still feeding the computer (charging at about 75W, computer draws 60 W when sleeping). This is surprising to me since I would have expected the battery not to lose any charge when acting as UPS / bypass. Any experience with this? Is there something I need to do to put it in UPS / bypass mode or is this default if its simultaneously plugged into wall and load where load is < 1440W? My concern is that its not actually working as a bypass at the moment but actually pulling from the battery to feed the computer and then topping it back off from the AC.

I'm guessing some of the internal functions use battery power regardless of the bypass function (bluetooth, display lights). There could also be idle consumption from the inverter being on.

Scider · Mar 8, 2023

Dabramzon said:
Thanks for the super helpful video and comments. I am trying to run my 767 as a UPS which I assume functions the same way as bypass. I have it plugged into AC and then my computer plugged into the AC out. Everything seemed to be working fine but after a few days the battery is showing at 97% (started at 100% a couple of days ago) and its slowly charging back up while still feeding the computer (charging at about 75W, computer draws 60 W when sleeping). This is surprising to me since I would have expected the battery not to lose any charge when acting as UPS / bypass. Any experience with this? Is there something I need to do to put it in UPS / bypass mode or is this default if its simultaneously plugged into wall and load where load is < 1440W? My concern is that its not actually working as a bypass at the moment but actually pulling from the battery to feed the computer and then topping it back off from the AC.

I know LFP batteries as a chemistry are notoriously difficult to get an accurate SOC from because the discharge curve is a near constant voltage. LFP SOC from what I'm aware is usually a calculation inferred from charge loss rather than a direct battery measurement like NMC. I'm guessing here, but I imagine Anker uses a discharge window to let the battery discharge a bit before topping it back up to get a new 100% reference. Probably a better way to maintain battery life than constantly trickle charging it.

Scider · Mar 8, 2023

watchdoc said:
I haven't tried your specific scenerio since I currently don't have a transfer switch but I have charged the Anker from my Champion 3400 watt generator WHILE I was also powering some loads. If there is a specific scenerio you would like me to try, lemme know but the Anker doesn't care if it's getting AC from the wall, a generator, or another inverter.

If your goal is to recharge the Anker from a generator WHILE you are connected to a manual transfer switch and powering critical loads, it should work fine but keep in mind the floating ground issues that solar generators come with. The Anker expansion battery is also very expensive. By the time you buy the 767 and the expansion battery, you could have purchased the much more capable EcoFlow Delta Pro. The biggest advantages of the Anker is portability and how quiet it is which makes it perfect for point of use scenerios like in your kitchen or living room during a power outage. I put it this way to people. The EcoFlow Delta Pro is moveable. The Bluetti AC200MAX is luggable. The Anker 767 is Portable and really the only one that one person and easily move and lift.

EDIT: AC charging rules apply while charging from generator as well. If you exceed 1440 watts for very long, the unit will give an AC overload error and the inverter will shut off.

Just had my first outage of the year and exercised the transfer switch and generator a bit. During an electrical ice/snow storm as well, just for funsies. A bit of a learning curve, for sure. I forgot to put the Kill-a-watt on the generator, would have been some good data to have in hand in retrospect.

I was imagining plugging the PowerHouse into my transfer switch and running my 120V backups on it until the SoC were to get low (25%?), then plugging the generator into the AC input to recharge the batteries. Ideally powering the critical loads and charging the battery simultaneously with minimal interuption to electricity.

Alternatively I'm also thinking about asking the city if I can put up a patio awning with some bi-facial solar panels to an off-grid battery back-up and a split-phase AIO inverter that could run my AC as well. A more costly approach for sure, but in eight years, DTE yet to inspire me with their ability to withstand weather events.

Urge38 · Apr 8, 2023

Grate video Watchdoc

firstly, many thanks for doing Ankers job for them, I hope you get some kick backs from Anker, as no one should work for free.

my question if you dont mind is

if you have only the PV (solar) input plugged in and charging, can you pull full rated load of 2,200watt from the Anker AC outlet ???

many thanks

watchdoc · Apr 10, 2023

Urge38 said:
Grate video Watchdoc

firstly, many thanks for doing Ankers job for them, I hope you get some kick backs from Anker, as no one should work for free.

my question if you dont mind is

if you have only the PV (solar) input plugged in and charging, can you pull full rated load of 2,200watt from the Anker AC outlet ???

many thanks

Yes, full inverter power when charging from the DC input (2200 watts UK, 2400 watts USA). 1440 watts total when in bypass mode.

Anker 767 Pass-Through Charging?

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