The date of availability for the ARB-L18-3500 is uncertain. The ARB-L18-3500U battery will work just as well for CURRENT Fenix products. There are also a variety of ARB-L18 versions with slightly lower capacity and prices.
The Fenix ARB-L18-3500 is a high capacity 18650 Li-ion rechargeable with a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. The battery also includes pressure relief vents which expel waste gas in the rare case of an internal short circuit preventing an explosion.
I got tired of seeing all of the weird knock off replacement batteries on Amazon, so I came back to Fenix and was excited to see that there is a rechargeable battery for my PD35. So excited and pleased with this!
I had a problem with my new fenix headlamp. The company immediately sent me a new one and I was so impressed I bought the higher capacity battery to go with it. Both are working perfectly. Couldn’t be happier.
I have four Fenix lights using the 18650. Two TK’s, a lantern, and an HM65R headlamp. I love having a one battery system. A double charger which keeps the batteries, but that only comes out once or twice a month as the 3400/3500 mAh batt’s last for a while! Overall this is an excellent unit.
The two batteries that were purchased have done there job and more I no longer have to be carrying around a hand full of regular C123 Batteries. They work great.
The contact on the phone was very helpful even though my light was not bought from their site. I chose to buy the battery instead of the hassle of warranty from another vendor. I will buy Fenix again, but only from their site for the great service
This is number 5 or 6 that I’ve order batteries for my flashlights. All good. they last a good long time. They are reliable. The chargers are first class. Have not reached the logical ending for any of the batteries yet.
The battery and the charger were shipped and received promptly. I have used the flashlight with the rechargeable battery throughout each work day for the past two weeks and both the battery and the charger have exceeded my expectations! I’m very pleased and highly recommend these Fenix products!
Absolutely spectacular, i am one happy customer. Always I like to have the best product and being a search & rescue member my life and the life of others depend on me being as good as the product I use in the field to be the best. I have tested a lot of batteries and these by far are the best.
These batteries provide a uniform and reliable power output for my Fenix lights. I use these in a variety of Fenix products including headlamps, regular flashlights and camping/utility lights. This is my preferred battery since it provides the longest run time.
I own a termite inspection company and so I have many Fenix flashlights and accessories. These are the best and brightest flashlights we have ever used and very durable. The batteries last a very long time as we use professionally 5 days a week. When we do need service they stand behind the product. I could not more highly recommend this product.
I can’t say enough about the charger. I expected a plastic step-on-me-once-and-I’m -dead charger. This thing is tough! I don’t know what it is made out of but I am so impressed I’m getting one for my step-son.
I use mine (HL60R) professionally (daily) and made the mistake of taking it goose hunting once and my step-son really loved it. He got one for Christmas and now getting a charger. Inexpensive and sturdier than any charger I have ever purchased at any price.
Friends gave me a Fenix UC40UE tactical light for my birthday, and I am hooked on Fenix Quality. Just returned from a 12 day elk in the Wyoming back country and this light was outstanding, while using the FENIX 3500 amh rechargeable batteries. 900 Lumens from this small compact light it awesome!! Outstanding quality!! I just ordered the new version of the TK75 and cannot wait to get my hands on this one. Fenix service is also outstanding and they are always helpful when I call…. helpful and full of the correct information! Keep up the good work! Fenix quality is second to none!!!!
Just got the batteries, they look good and are charging now. This review is primarily for the Fenix brand and level of service. I ordered two of these batteries and a two Bay charger. When I received the order there was a 4 Bay digital charger and a note stating that they were out of stock on the two Bay and to please accept the free upgrade. I am highly impressed, Fenix didn’t have to do that but rather than make an ordeal out of it they not only got me what I needed but gave me more than I had asked for. I appreciate this greatly as I am going camping in a few days and don’t have time to order another from somewhere else without having to pay overnight shipping. Fenix quality is outstanding and they’re service to customers matches it. Im now a customer for life
Bob Chauncey (verified owner) –
Also nice and easy to charge, but need charger, while Fenix ARB-L18-3500U has port to charge and likely easier to do.
Bradley Rogers (verified owner) –
Good to have as a backup power source on rechargeable headlamp.
Anonymous (verified owner) –
Great battery..
Melissa M. (verified owner) –
I got tired of seeing all of the weird knock off replacement batteries on Amazon, so I came back to Fenix and was excited to see that there is a rechargeable battery for my PD35. So excited and pleased with this!
Wendy Osborn (verified owner) –
Package came opened, battery will not hold a charge. Emailed asking for a resolution, they never responded 🙁
Dianne (store manager) –
I have asked warranty to contact you. That’s really odd.
Myles Rogers (verified owner) –
I thought it had a teceptical on battery for charging
Thomas (verified owner) –
Great
Al (verified owner) –
I had a problem with my new fenix headlamp. The company immediately sent me a new one and I was so impressed I bought the higher capacity battery to go with it. Both are working perfectly. Couldn’t be happier.
Anonymous (verified owner) –
I have four Fenix lights using the 18650. Two TK’s, a lantern, and an HM65R headlamp. I love having a one battery system. A double charger which keeps the batteries, but that only comes out once or twice a month as the 3400/3500 mAh batt’s last for a while! Overall this is an excellent unit.
David D. (verified owner) –
Love it
Chris A. (verified owner) –
The two batteries that were purchased have done there job and more I no longer have to be carrying around a hand full of regular C123 Batteries. They work great.
David B. (verified owner) –
Good batteries, they provide plenty of power and last a long time.
Tim C. (verified owner) –
Long life, works great
Michael M. (verified owner) –
The contact on the phone was very helpful even though my light was not bought from their site. I chose to buy the battery instead of the hassle of warranty from another vendor. I will buy Fenix again, but only from their site for the great service
BRIAN CAMBRIA (verified owner) –
so far, so good
Brian Aldouri (verified owner) –
Nice batteries
Jeff (verified owner) –
Exactly what I ordered. Fast delivery. Thank you.
John E. (verified owner) –
Nice to have a backup battery, especially with a good capacity. Came with a nice battery case that will connect with another similar one.
Diego (verified owner) –
Good quality
Stan Lake (verified owner) –
Awesome long lasting battery
Anonymous (verified owner) –
Good
Anonymous (verified owner) –
Could be better
Ryan C. (verified owner) –
Its a battery that works as expected. WIll be purchasing more.
Anonymous (verified owner) –
Amazing!
Jack U. (verified owner) –
Top-of-the-line battery!
John E. (verified owner) –
Good capacity! Nice to have a backup battery!
Thomas (verified owner) –
Fenix batteries and chargers nothing else makes any sense.
John E. (verified owner) –
CHARGED UP NICELY! GOOD TO HAVE BACKUP BATTERIES FOR THE TK35UE 2018 VERSION AND ENJOY ITS FULL POTENTIAL.
Terry (verified owner) –
The best Ah.
Donald (verified owner) –
Wanted xtra long battery life between charges.
Artec (verified owner) –
Long-life battery works well
Henry Jarnagin (verified owner) –
Ditto
Joseph Elias (verified owner) –
Battery is awesome. Holds a charge for a long time
Anonymous (verified owner) –
This is number 5 or 6 that I’ve order batteries for my flashlights. All good. they last a good long time. They are reliable. The chargers are first class. Have not reached the logical ending for any of the batteries yet.
ANTHONY R. (verified owner) –
Great battery, lasts all day, charges over night, has never failed me
Tom S. (verified owner) –
Didn’t know this has a charging port.
stephen ricard (verified owner) –
So far so good
Barry Kitchens (verified owner) –
Worked as advertised
Michael McKee (verified owner) –
Wish the batteries came with a protective case; however, they have a long battery life and well worth the buy.
Jonathan T. (verified owner) –
Great Batteries last longer and brighter then the 2500 . I recommend these 3500 batteries.
Chris T. (verified owner) –
works perfectly!
Tim H. (verified owner) –
The battery and the charger were shipped and received promptly. I have used the flashlight with the rechargeable battery throughout each work day for the past two weeks and both the battery and the charger have exceeded my expectations! I’m very pleased and highly recommend these Fenix products!
RICARDO LOPEZ (verified owner) –
your products are the best in the world, Thanks for being present in this World Thank you
Robert G. (verified owner) –
The PD35 reaches it’s full potential with this battery.
Britton L. (verified owner) –
Lasts long
Ray Walter (verified owner) –
Very good battery.
David G. (verified owner) –
The Fenix flash light with these batteries are great. I us them for work everyday
Steven N. (verified owner) –
Great product
KYLE (verified owner) –
its great
Doug D. (verified owner) –
I’ve had no issues with the 3500mAH rechargeable battery. I seem to get a nice long charge from this battery everytime I use it.
Jeffrey Obermeyer (verified owner) –
Great value
Michael (verified owner) –
Powerful long lasting
Mark Kuivenhoven (verified owner) –
It’s a battery it’s working
Samuel Shearer (verified owner) –
PD35 with rechargeable Lithium Ion batteries is about one of the most useful tools I own. Everyday without fail, quality light when I need it, Thanks
Jeremiah Prunty (verified owner) –
Bought as a spare.
Anonymous (verified owner) –
A high quality long lasting battery
Miguel G. (verified owner) –
Holds a long charge
Anonymous (verified owner) –
Lot of power
Bill M. (verified owner) –
Perfect upgrade for my EDC UC30 light.
Anthony (verified owner) –
Great battery. Keeps turbo working for a long time.
Steven C. (verified owner) –
Charges fast and powers the lamp perfectly.
James W. (verified owner) –
Bought an extra to have on hand.
Thomas O. (verified owner) –
works great
Thomas Drake (verified owner) –
Absolutely spectacular, i am one happy customer. Always I like to have the best product and being a search & rescue member my life and the life of others depend on me being as good as the product I use in the field to be the best. I have tested a lot of batteries and these by far are the best.
quincy (verified owner) –
Last a lot longer than the throw away batteries.
Jeffrey Barnette (verified owner) –
Very good Batteries.
Bill Magoon (verified owner) –
Bought simply as a back up battery. Have not used it yet but am sure it will be fine.
Sajad Salehi (verified owner) –
One of the best battery I’ve ever had
David C. (verified owner) –
Perfect battery!
John J. (verified owner) –
Very fast shipping. Thank you!
SHUBHRA (verified owner) –
Great
GREGORY MUMMAH –
Very good battery – works as advertised. 3500mah is definitely the way to go
Wayne (verified owner) –
These batteries provide a uniform and reliable power output for my Fenix lights. I use these in a variety of Fenix products including headlamps, regular flashlights and camping/utility lights. This is my preferred battery since it provides the longest run time.
Matthew K. (verified owner) –
Great battery! Long lasting!
John J. (verified owner) –
Works as advertised. It is a bit pricy compared to other 18650’s on the market. But at least with Fenix, I know that I’m getting a good product
Timothy M. (verified owner) –
I wasnt sure that this w/b an improvement over the 2600mAh, but it is! Worth it
Eric M. (verified owner) –
I own a termite inspection company and so I have many Fenix flashlights and accessories. These are the best and brightest flashlights we have ever used and very durable. The batteries last a very long time as we use professionally 5 days a week. When we do need service they stand behind the product. I could not more highly recommend this product.
Anonymous (verified owner) –
They seem to hold up pretty well. I haven’t really had time to put these batteries through the wringer yet…
EZRA (verified owner) –
Excellent battery.
Sergeant Frank C. (verified owner) –
Solid purchase.
Paul Carroll (verified owner) –
Outstanding battery. I’m buying some for my coworkers
Richard –
I can’t say enough about the charger. I expected a plastic step-on-me-once-and-I’m -dead charger. This thing is tough! I don’t know what it is made out of but I am so impressed I’m getting one for my step-son.
I use mine (HL60R) professionally (daily) and made the mistake of taking it goose hunting once and my step-son really loved it. He got one for Christmas and now getting a charger. Inexpensive and sturdier than any charger I have ever purchased at any price.
Tommy B in Dallas –
Friends gave me a Fenix UC40UE tactical light for my birthday, and I am hooked on Fenix Quality. Just returned from a 12 day elk in the Wyoming back country and this light was outstanding, while using the FENIX 3500 amh rechargeable batteries. 900 Lumens from this small compact light it awesome!! Outstanding quality!! I just ordered the new version of the TK75 and cannot wait to get my hands on this one. Fenix service is also outstanding and they are always helpful when I call…. helpful and full of the correct information! Keep up the good work! Fenix quality is second to none!!!!
Kevin (verified owner) –
Just got the batteries, they look good and are charging now. This review is primarily for the Fenix brand and level of service. I ordered two of these batteries and a two Bay charger. When I received the order there was a 4 Bay digital charger and a note stating that they were out of stock on the two Bay and to please accept the free upgrade. I am highly impressed, Fenix didn’t have to do that but rather than make an ordeal out of it they not only got me what I needed but gave me more than I had asked for. I appreciate this greatly as I am going camping in a few days and don’t have time to order another from somewhere else without having to pay overnight shipping. Fenix quality is outstanding and they’re service to customers matches it. Im now a customer for life