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Four rectangular lithium-ion batteries and a compact wall charger with foldable plug

Kastar

Kastar BL-5B 4-Pack Li-Ion Batteries & LCD Charger

SKU CH-2JRP-76ZYM

Four 3.7 V 890 mAh Li-Ion packs with a 100–240 V folding-plug LCD charger

  • Total capacity4.26 Wh
  • Pack contents1 Charger + 4 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 3 in
  • Key featuresFoldable Flat Plug
  • Four 890 mAh Li-Ion cells deliver reliable power
  • Smart LCD charger shows red while charging and green when full
  • Foldable flat plug folds away for compact storage
  • Universal 100–240 V input works worldwide without a converter
  • Compatible with BL-5B cameras, mini keyboards and Tecsun radios

BL-5B Battery Pack with LCD Charger

This set supplies four 3.7V lithium-ion cells rated at 890mAh and 4.26Wh each, plus a foldable-plug wall charger that accepts 100-240V input and delivers 4.2V at 600mA. The charger shows red while charging and green when cells are full or on standby.

For compact cameras and mini keyboards using BL-5B

Owners of the listed Vivitar, Rollei, SVP, Minox, Tecsun, Avantree, Tecboss, YAGALA and compatible mini wireless keyboards can replace original packs directly. Devices that require a different battery form factor, higher capacity or a proprietary charging protocol will not work with this kit.

Charger output fixed at 4.2V 600mA

The single voltage and current rating means the unit only suits BL-5B specification cells; it cannot charge larger capacity packs, other chemistries or multi-bay configurations.

How it compares

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

Price $15.99
Cheaper than about 57% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBL-5B
Part numberMCH-4B-BL5B-D
Total capacity4.26 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 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

Will the 3.7V 890mAh BL-5B batteries power my Vivitar V8027 that originally used the same model?

Yes, the pack includes four BL-5B lithium-ion cells rated at 3.7V and 890mAh, matching the original specification for the Vivitar V8027 and the other listed cameras.

How do I know the charger is actually charging each battery?

The charger shows a red LED while a battery is charging and turns green when that battery reaches full charge or is on standby.

Does the package include a power cable or just the wall adapter with the foldable plug?

The charger has a built-in foldable flat plug that connects directly to a 100-240V AC outlet, so no separate cable is required.

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