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Two Kastar lithium-ion batteries and a compact wall charger with foldable flat plug

Kastar

Kastar PS-42B 2-pack battery & charger for Sony VGP-BMS77

SKU CH-3B3X-GVE5K

Two 1400 mAh lithium-ion batteries and a foldable-plug AC charger compatible with Sony VGP-BMS77 mouse batteries

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 2 in
  • Key featuresFoldable Flat Plug
  • Two 1400 mAh Li-Ion batteries included
  • 18 Wh capacity per cell for long runtime
  • AC 100-240 V charger works worldwide
  • Foldable flat plug stores neatly
  • LED shows red while charging, green when full

Kastar PS-42B Battery & Charger Kit

The Kastar PS-42B kit includes two lithium-ion batteries and an AC wall charger. It replaces the Sony VGP-BMS77 battery used in compatible Bluetooth laser mice. Each cell delivers 3.7 V and 1400 mAh for 5.18 Wh of capacity.

Charger Input AC 100-240 V 50-60 Hz

The wall charger accepts worldwide mains voltage from 100 to 240 V at 50 or 60 Hz. Its output is fixed at DC 4.2 V and 600 mA. A foldable flat plug makes storage easier, and an LED shows red while charging and green when full or on standby.

Two 1400 mAh Li-Ion Cells

The pack supplies two 1400 mAh lithium-ion cells rated at 3.7 V each. This capacity decides whether the kit matches the runtime you expect from the original Sony 4-268-590-02, SP60 or SP60BPRA9C battery. Buyers needing higher capacity cells should look elsewhere.

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 namePS-42B
Part numberNOCAR-2B-PS42B-S
Total capacity5.18 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents1 Charger + 2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

Is this the 2-pack with charger included?

Yes — the pack contains one AC wall charger and two 3.7 V lithium-ion batteries rated at 1400 mAh each.

What does the 1400 mAh capacity mean for daily mouse use?

Each 1400 mAh cell stores 5.18 Wh, giving several days of typical Bluetooth mouse operation before recharging.

What voltage does the charger output and what input range does it accept?

The charger accepts 100–240 V AC at 50–60 Hz and delivers 4.2 V DC at 600 mA to the batteries.

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