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ARB-L18-3500U Built-in USB Rechargeable Battery

$33.00 $25.95

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ARB-L18-3500U is a high capacity 18650 Li-ion USB rechargeable battery with a built-in micro-USB charging port. It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. These USB rechargeable batteries can quickly be charged without the need for a separate charger. This not only saves you money from purchasing a charger, but also provides the convenience of not having to carry around another device. This will work in all of the current models that utilize a li-ion 18650 battery. A micro-USB charging cord is NOT included.

Click here to see other models that utilize 18650 batteries.

SKU: ARB-L18-3500UN/ABarcode: 6942870304724N/A

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More Information

Specifications of the ARB-L18-3500U Built-in USB Rechargeable Battery

  • Micro-USB charging port
  • 3500mAh high capacity
  • USB rechargeable batteries
  • Protection circuitry to prevent short circuits
  • Pressure vents to prevent explosions
  • 500 charge cycles
  • Voltage: 3.6V
  • Charging Current: Recommended 1A, maximum 2A
  • Charging Current USB Port: 0.8A
  • Weight: 1.8 ounces (50.2g)
  • Size: Length: 2.8″ (70mm) Diameter: 0.7″ (18.6mm)
  • Warranty Period: 12 month from date of purchase
  • Indicator light on battery is red while charging, blue when charged

Customer Reviews

Based on 350 reviews
89%
(312)
7%
(24)
2%
(7)
0%
(1)
2%
(6)
D
Dale Hovey

Works great., longer run time. Upgraded from standard battery

R
Richie Taito
Very high-quality

As with anything purchased From Fenix lighting, I am extremely satisfied. I am definitely a lifer. Thank you for always standing behind your products and taking care of my family and I!

J
Jim DiRenzo
Not sure

When I contacted Fenix about my recharging problem I was told that my batteries were bad, so I bought the ARB-L18-3500U battery. Unfortunately that was not my problem. I was then told that my Apple computer was the charging problem. I spoke to another Fenix owner who told me that he used the Apple to charge his flashlight. I then contacted the Fenix warranty dept and was advised to send my flashlight in for repairs. I am waiting for it's return.
Fortunately Tom Moran gave me a SECOND Fenix so that I will have two. Thank you Tom Moran.

We have had issues with some apple bricks not charging lights/batteries fully, so we do generally recommend charging with a different charger.

K
Kenneth Bunker
Trust this battery

Bought a second as a backup and looked around but nothing seems to match the reliability and safety of the Fenix battery not to mention convenience of the direct USB charging.

L
Lawrence Jacobucci
They work great

These are the best batteries I have ever used

H
HiTek21
Good batteries

These provide a good amount of run time for my PD32 2016 flashlight. I use my flashlight a lot at work and I can usually get through the whole week before I need to recharge it.

Normally I use my AccuPower IQ338XL charger to charge up my battery. The charger usually indicates it gets up anywhere between 3100 - 3300mah when I do a discharge and charge cycle.

The USB charging port is a little bit of a hit or miss. It does charge your battery but I don't think it provides a full capacity charge. The few times that I have used the USB port to charge up my battery (and it showed a blue full charge light) the flashlight had a noticeable flicker after a couple of days of use which indicates its running low on power. When i throw it on my accupower charger it shows its down around 3.5v.

Still a good battery I still prefer to charge it on a good smart charger and only use the USB port for emergency charges.

We will check into that on the U batteries, as we have not heard that they aren't charging in full.

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