I was just watching Jeff Kendall-Weed's review on the Pivot Shuttle Amp'd and he briefly mentioned that using the Avinox quick charger fried his Jackery (and Jackery wouldn't cover it under warranty). He didn't really explain this issue other than saying he doesn't recommend using one to charge. Does anyone use a Jackery to charge their bikes when out at the trails? I know lots of people use it to charge other ebikes... just not an Avinox new or old.
Charging an Avinox with a Jackery power supply.
- Thread starter Wah
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Yotaismygame
New Member
The Avinox GaN fast charger creates high inrush spikes when plugged in, plus peaky current and high freq noise that can stress power station inverters way more than a normal resistive load (like a kettle drawing >2kW doesnt fry the power station because its normal load).
But that said I use an Anker c2000 gen2 and no issues yet. Anker even promote theirs for charging ebikes. I'd imagine its rare but it definitely could happen to any portable power stations because of the spiky load.
If you're worried an option is to use the slower 4A charger off the power station instead, same thing but much gentler on the initial spikes.
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- #4
I don't have my avinox bike yet.... does the charger have a switch to toggle between fast and slow charging?
He did reply to my comment on the video and said he thinks the charger just drew too much power, so I'm guessing his Jackery just wasn't rated with a high enough capacity for that much draw.
Yotaismygame
New Member
What does the fast charger draw? My fast shimano charger only uses around 130-150w max. I can charge two bikes at once easy with my 600w power station
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508w
I have a DJI power 1000, the inverter rated around 2500w from memory, had no troubles fast charging.
Seems a bit odd from jackery, the smaller the powerbank the lower the inverter tends to be rated but they usualy have inbuilt protections rather than frying themselves.
Seems a bit odd from jackery, the smaller the powerbank the lower the inverter tends to be rated but they usualy have inbuilt protections rather than frying themselves.
Yotaismygame
New Member
At least Pecron units are cheap. If I end up with Avinox might need a bigger power station.
ptkatoomer
Member
I think Jeff did mention in one of his replies that his Jackery was a 1000 w unit. That's a smaller size for them.
Yotaismygame
New Member
Anyone experiment with this? I'm wondering if I need to stronger power station. I have a 600watt one now.
We are using Jackery / DJI and Ecoflows. No issues at all. The Avinox 12a fast charger only draw around 450-480 max so as long as your portable battery can maintain over 500w (almost all of the modern ones easily do this) you should be fine.
I have an EcoFlow and it is around 3,000 watts. I personally would use the slow charger only since slow charging is generally better for battery life and health. I am not an electrical engineer so not sure how the fast charger will fry a charging unit that exceeds the watts of the battery by let's say 2X. I can see it frying a small unit just by overwhelming it with its high draw.
Yotaismygame
New Member
I agree. I bought both chargers. Ill need the fast when doing long days and charging at lunch. Which isnt all that often for me. Usually do a 3 hour ride
I use the ECOFLOW River 2 Pro Portable Power Station 768Wh 1600W Max, with my 12A Amflow charger. There is an initial inrush of current to the Amflow Fast Charger, as the capacitors charge up. As long as your inverter is designed to protect itself against inrush. It will be fine.
If it isn't. You can have problems.
If it isn't. You can have problems.
Yotaismygame
New Member
I wanted to report back on this.
I'm using a "PECRON E500LFP 600W 576Wh" and while testing it with the 12amp charger at home and once out on the trail it has worked fine. Pulling about 330watts and about 1%/Minute charge rate. Now just yesterday I had just made a climb back to the parking lot, probably around 600ft of vert in something like 90nm/500watts and I plugged it into the charging setup. It would not charge. Kept tripping the Pecron. Bike battery was at 25%. Went home later that day plugged it back into the pecron and charged just fine.
Do you think the bike battery was on the warmer side causing the need for more watts? I know the 12 amp is suppose to use 508W max. Kinda weird. Thoughts?
I'm using a "PECRON E500LFP 600W 576Wh" and while testing it with the 12amp charger at home and once out on the trail it has worked fine. Pulling about 330watts and about 1%/Minute charge rate. Now just yesterday I had just made a climb back to the parking lot, probably around 600ft of vert in something like 90nm/500watts and I plugged it into the charging setup. It would not charge. Kept tripping the Pecron. Bike battery was at 25%. Went home later that day plugged it back into the pecron and charged just fine.
Do you think the bike battery was on the warmer side causing the need for more watts? I know the 12 amp is suppose to use 508W max. Kinda weird. Thoughts?
Yes, warm batteries have lower resistance so can take more current whilst charging.
The charger should regulate it though, it’s the charger that ultimately decides what current the battery can have, so can only conclude that the charger was trying to give the battery more current than your power pack could deliver?
Whilst the nominal max watts demanded may be 508w, it could demand more on startup for a ‘hungry’ battery.
Yotaismygame
New Member
Probably what it was then. I would see the watts start to creep up on the Pecron then it would trip. That's the first time i've tried charging with that setup when the bike was "hot".
Yotaismygame
New Member
Have you tried when the bike is "hot"? I doubt youll have issue with 2000w available. The one thing I like about my small 600w pecron is how easy it is to take with me. But I'm thinking in every situation its not enough power. Which I plan to use during quick breaks so very likely the bike will be hot.
action99
New Member
Charged mine with a Bluetti 600w from 50 to 82% after 780m elevation climb with the last 360m all in Turbo as it is a very steep climb. I did not wait, plugged it in right a way and no issue. I did charge at the end of that climb so at the peak of the heat.
It is strange that you mention 330w draw as mine was around 460-480w draw until 80% the when down to 420w for the additional 2%.
Yotaismygame
New Member
I confirmed again last night. Bike was at 15%, pecron 98%, plugged it in no issues. Pulling around 315w and did 9% in 10 minutes. Maybe the pecron was also hot sitting in the truck for a few hours? I hate to run out and buy a bigger one right now without knowing for sure if it's going to work or not.
action99
New Member
I find the power station battery too hot a more plausible explanation. How hot was that day? Was the power station under the sun?
Avinox will delay charging or more slowly charge the the battery if is too hot, not pull above 600w, so it should not trip the power station
Btw the math does not add up as 315w in 10 min would equate to 6.5% (assuming 800wh battery).... and this is without the loss of the charger that is no 100% efficient so I guess it would be more like 6% and surely not 9%.
All the reports say between 410 to 490w so the 315w seems strange.
Yotaismygame
New Member
No idea. 600wh battery is what I have. The power station says what it says..... Both times I've used it, it was one percent less than how much time had passed. 15 mins net 14% and 10 mins nets 9%. Ill try again this weekend. The power station was in the truck in the shade and it was around 85 degrees out.
action99
New Member
Ok then it makes sense as you have the 600wh battery, as 315w for 10min would make around ~8-9%.
85 degrees in the shade should not be a problem.
.
Btw you can add a custom display that shows the battery temperature on Avinox, it maybe useful to find the root cause
action99
New Member
This was mine right before charging with the power station
Yotaismygame
New Member
Thanks for the info. Ill test it again this weekend in a similar fashion.
