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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 346 reviews
Lawrence Jacobucci
They work great

These are the best batteries I have ever used

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.

awesome product

it's long lasting and easy I mean very very easy to charge, love love this battery.

Dave C
Works well

Since these can be charged with any usb-c cable and power adapter, they are far more convenient that buying batches or CR123s. Hold a charge well. Good choice.


does what it is supposed to do

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