Fenix ARB-L16-700U Built-in USB Rechargeable Battery

Rated 3.00 out of 5 based on 3 customer ratings
(3 customer reviews)

ARB-L16-700U It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. This battery can quickly be charged without the need for a separate charger. This not only save you money from purchasing a charger, but also convenience of not having to carry around another device.

It is designed to work with: PD25, PD32, PD35, PD35 TAC, RC09, TK15C, TK15UE, TK16, TK32, TK35, TK35UE and E15.

$9.00 $6.50

3.00 out of 5
SKU: ARB-L16-700U. Categories: , , .
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  • ARB-L16-700 Built in USB Rechargeable Battery
  • 700mAh
  • 3.6 Volts
  • Charging current by charger: 1A
  • Charging current by USB port: 0.3A
  • Protection Circuit in the Anode to prevent short circuit
  • Multiple layers of protection
  • 500 charge cycles can be expected from a properly maintained battery
  • Fully covered with a steel shell for impact resistance
  • Over charge, discharge, short circuit, and over heating protection
  • Three sets of over-head protection:  Pressure relief valve protection, separate microporous protection, and PTC cathodal block protection
  • Weight: 0.6 ounces (17.4g)
  • Size: Length: 1.4″ (35.5mm) Diameter: 0.7″ (18.6mm)
  • 12 months free warranty from date of purchase
Reviews (3)

3 reviews for Fenix ARB-L16-700U Built-in USB Rechargeable Battery

  1. Rated 5 out of 5

    Anonymous (verified owner)


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  2. Rated 3 out of 5

    Anonymous (verified owner)

    So far the battery seems do it suppose to.

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  3. Rated 1 out of 5


    I bought 6 of this batteries recently and conducted some experiments. It’s indeed really convenient to have the charging circuit integrated into the battery itself, making a travel simpler since you no longer need to bring a separate charger with you. However, this product seems to have LOWER capacity in comparison with its predecessor “ARB-L16-700” (without the built-in charging circuit).

    First, I measured 3 of the predecessor battery ARB-L16-700 (0.5A charging, 20mA cut-off, then 1A discharge to 2.75V):

    716mAh 2.368Wh
    723mAh 2.408Wh
    729mAh 2.491Wh

    The capacity of the predecessor battery is as rated, this is good. You may find similar results in HKJ’s review here:

    Then I measured all my 6 samples of this ARB-L16-700U battery, charged with the built-in charging circuit:

    600mAh 2.046Wh
    584mAh 2.013Wh
    564mAh 1.921Wh
    519mAh 1.741Wh
    564mAh 1.882Wh
    585mAh 1.914Wh

    Then I measured them again with the same changing conditions as ARB-L16-700:

    610mAh 2.101Wh
    602mAh 2.087Wh
    593mAh 2.034Wh
    586mAh 2.000Wh
    584mAh 2.013Wh
    596mAh 2.049Wh

    I gained a bit more capacities this time, but the result is still far from my expectation. Also, it looks like the charging circuit of my 4th sample is not good.

    Obviously ARB-L16-700U has a different cell core with ARB-L16-700, and this new cell core has about 20% lower capacity. This is UNACCEPTABLE.

    3 out of 3 people found this helpful. Was this review helpful to you?
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