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Four Kastar NP-120 Li-Ion batteries and a dual-slot USB charger with LCD screen

Kastar

Kastar NP-120 4-Pack Battery & LTD2 USB Charger for Fieldpiece RLB2 SCL2 SRL2 SRL8

SKU CH-PFW7-51MXF

Four 3.7 V 2300 mAh Li-ion packs plus a dual-bay USB charger with LCD status for Fieldpiece leak detectors

  • Total capacity8.51 Wh
  • Pack contents1 Charger + 4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions5 × 3 × 3 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • Four 2300 mAh lithium-ion cells power Fieldpiece leak detectors
  • LTD2 charger fills two batteries simultaneously from any USB source
  • Micro-USB and Type-C inputs let you recharge from power banks or wall adapters
  • LCD screen shows real-time capacity and charging status for each cell
  • 51 Wh energy rating meets airline carry-on limits for hassle-free travel

Four-pack Li-ion batteries with dual USB charger

This set includes four 3.7 V lithium-ion cells rated at 2300 mAh each, plus an LTD2 charger that powers two batteries simultaneously. It is designed for technicians who rely on Fieldpiece SCL2, SRL2 or SRL8 leak detectors and need ready replacements for the RLB2 pack.

Check detector model and power source

Verify that your instrument uses the Fieldpiece RLB2 battery before ordering. The charger requires a 5 V USB supply capable of 2 to 3 A, so confirm you have a suitable wall adapter, power bank or vehicle port with Micro-USB or Type-C input.

Compact charger with swappable plates and LCD status

The charger measures 5 by 3 by 3 inches and features an intelligent LCD that shows charge level for each cell. Interchangeable plates let you adapt the unit to other battery types, while dual 800 mA outputs replenish a pair of packs in a single session.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $39.99
Pricier than about 84% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameNP-120
Part numberCH-LTD2-4B-Q120-C
Total capacity8.51 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 3 in
In the box
Pack contents1 Charger + 4 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Does the pack include everything needed to charge the batteries or must I buy a power adapter separately?

The set contains one LTD2 dual-slot charger, four NP-120 batteries and a Micro-USB cable; the charger accepts 5 V 2–3 A input via Micro-USB or Type-C, so any standard USB power source delivering 15 W will operate it.

Which of the listed Fieldpiece detectors does the NP-120 replace the original RLB2 cell in?

The batteries are compatible with Fieldpiece SCL2, SRL2, SRL2 Leak Detectors, SRL8 and SRL8 Leak Detectors that use the RLB2 part number.

What runtime can I expect from the 2300 mAh cells when powering a leak detector in the field?

Each cell stores 8.51 Wh at 3.7 V; actual run time depends on the detector’s current draw, but the charger restores two packs at 800 mA each in roughly three hours.

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