I have to agree, I like the sanyo 2600mah. Seems to give me higher current readings in the same light vs the Panasonics. The Panasonics are not to be confused with a low performance cell. They are very good quality cells. Its just the sanyo’s may have a slight edge in high current draw lights where voltage sag plays a big part in performance of the light.
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If you look at member HKJ’s comparator Battery test-review 18650 comparator
Choose for the comparator keeppower (Sanyo) 2600mah vs keeppower (Panasonic) 3400mah you can see that towards the end of the discharge the voltage stays higher for the 2600mah Sanyo’s. About a tenth or better of a volt higher in either a 3 amp or 5 amp draw. That would allow for a longer regulation of current to give you more light for more of the discharge. Once it’s at the end of the discharge it falls flat on it’s face though. The Panasonic 3400mah wouldn’t give you as much light through out the entire discharge like the sanyo but once the sanyo is depleted the Panasonics would still have quite a bit of reduced output of light left. So it basically boils down to which one suits your needs most. Longer run time or the most light you can have during a discharge. Just my two cents.
Choosing between them isn’t very difficult imo. If you have well regulated light Panasonics are for you, If regulation is not perfect (like with AMC based driver) Sanyos are better choice.
PS. Have you noticed that Fasttech doesn’t have protected Sanyos UR18650FM? They just have UR18650Fs which are older and may have less capacity.
No, it hasn’t. 3400s still are over $17, 3100s are over $14.
Are you sure? From what I have been reading in some other threads here, there is no real difference between F/FM? From what I can read the cells are also brand new and measure near 2600mAh Capacity?
What cells would you recommend in Single 18650 Nitecore Flashlights… Is 3400 oder 2600 the better choice? P25/EC25 for example. They both have step down after 20min. So running them only at turbo isnt a good choice at all
Basically the batteries in the bottom link have a much wider button top at the top and the pcb’s are better. The pcb’s were probably done by a different company than the top battery link.
Doesn’t this depend on the type of regulation it can perform? Along with how you use the light, if you turn it on for long periods then you’ll get the step down, if however you use it for short burst you might not often get it to step down.
If the driver can’t boost the voltage once the 18650 drops below the voltage required then it’ll only dim with time rather than give a stable output.
In such a situation the 2600 may well offer higher voltage for longer than the 3400. If however you are likely to use lower output modes more often that don’t require such voltage from the battery, then the 3400 will offer more overall runtime.
When I bought lime 6pairs of the Panasonic 18650 3400mah proteced batteries they were 19.01 q pair I can only speak on what I know they are pretty darn long and fat, and my own informal test with a Kaidomain C8xml2-u2 I got 2 hrs 17 minutes before the protection set in and shut it down.
Hi BLF, sorry if this is considered as hijacking the thread. Hope it is okay to ask some 18650 related questions here Trying to choose some beginner’s protected 18650 cells. Noticed the following in various posts and links, but have concerns primarily the “fitting” of cell into different flashlights. Would you consider any particular of the following as “beginner proof” and “best all-rounded fitting”??
By the way, currently don’t own any 18650 flashlight, and have been dreaming over single 18650 lights such as SRT7, SC600 MKII, PD35, SRT5, ArmyTek, etc… Oh no!! I am in trouble, hahah!! Also, I have similar questions for 14500 choice here. Many thanks!