my light’s tracking is showing;
Shipment accepted by airline 2021-05-26,
and today it shows that it has arrived in the USA
hopefully it will be here sometime next week
I picked up 3 Lishen LR2170LA 35 amp cells from 18650BatteryStore.com
I saw a few charts that made me think that these are very good 21700’s
hopefully they will be good cells for this light
there aren’t to many 21700 options available as stocks are sold out
of most other brand cells everywhere I checked
The cells I ordered arrived very fast and they have good hefty weighty feel
so I suspect they are quality genuine cells
the cells “just” barely squeeze into my i4 and Liitokala chargers,
I will test them later in the Liitokala for capacity
18650BatteryStore was fast and easy
so I also ordered 10 Molicel P26A to have on hand
I'll be interested in your experience with the lishen 21700 35amp. I also picked up some P26a on the recent sale, I only use 18650batterystore.com unless there is a special circumstance. They are fantastic.
My L21A took 15 days…11 once it was shipped. Not bad at all. Also ship from AliExpress.
As I look on my shipping page it says estimated delivery July 9th! I hope that is wrong!
I got my P42A from a place in Calif. I can’t recall the name now! Something legit. That’s in my previous post also. Took only 66 hours…that was over last weekend.Earlier in this thread I posted information that the owner from Lion wholesale told me and why all the batteries are harder to get now. Good luck with your batteries. I don’t believe hkj has them in his comparator. I will look I would doubt very much if they are as good as p42a or Samsung 40T, could be wrong.
go to aliexpress and sign in,
then on the order page look for “track order” and view detail
it shows a shipping progress bar at the top that shows;
CN————————— US customs—————————Destination
on this bar it shows the package’s progression as just past the US customs on the bar
so it appears that it has cleared customs
below this it has these details
Shipment accepted by airline
Started customs clearance process
Shipment left country of origin warehouse
Shipment at country of origin warehouse
correction- I'm sure LP does know many things we may not. I guess that just makes me a little curious.. anyway. Here's hoping that my light ships before the "time frame" alix gave it runs out. What happens then, do they cancel my order?
To those trying to choose the correct battery for this application;
First consider max load on each cell (25A max drawn the light, divided by 3 cells, equals roughly 8-9A max discharge per cell)
Then go to member HJC’s very handy battery comparator and enter the cells that you want to compare. Next enter the discharge rate, which in this case would be 10A (I don’t think he has a 9A setting)
Then overlay the graphs. This will show you which battery performs best at that specific rate of discharge.
Lastly, factor the capacity of the cell, with your needs. For example, maybe a cell like the 30T slightly outperforms, with the light on turbo, say a cell like the Tesla (like I am using with this particular light). Does that very slight amp draw advantage justify losing 2000mah of capacity? That is up to you to decide, based on your use expectations.
What is not in that reasoning, is at what voltage the current must delivered, this is a combination of the led voltage at 25A and voltage losses underway from battery to led at 25A. Because this is a new light it is not sure what to expect, but the mentioned sub-optimal FET’s used in the battery carrier (for reverse battery protection, I really like the feature) predict quite some loss, which can be compensated by using higher drain batteries. Which capacity/current capability for the batteries is optimal (for turbo-use) remains to be seen.
Hopefully the sub-optimal FET issue was rectified by production time? I will also be going through the whole current path on mine, and reducing as many losses as is possible. The goal of my post was to use available data to help confused people with their decision.
Speaking of data, love and use everything you provide for us here Jozz, thank you.