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Kastar BT-02 lithium-ion battery and foldable AC wall charger

Kastar

Kastar BT-02 Battery & AC Wall Charger 1-Pack

SKU CH-1E4R-X7Q7W

A lithium-ion battery and foldable AC wall charger for Zoom Q4 and Q4n recorders

  • TypeBattery & Charger
  • Pack1 Charger + 1 Battery
  • ChemicalLi-Ion
  • Capacity5.18 Wh
  • Dimensions3*2*2 Inch
  • FeaturesFoldable Flat Plug
  • Replacement battery for Zoom Q4 and Q4n recorders
  • 1400 mAh lithium-ion cell delivers 5.18 Wh capacity
  • Foldable flat-pin wall charger fits 100–240 V AC outlets
  • 600 mA charge current with red-to-green LED status
  • Single pack includes one battery and one charger

Replacement Kit for Zoom Recorders

This bundle provides one lithium-ion battery and a matching AC wall charger designed for the Zoom Q4 and Q4n handy video recorders. It replaces the original Zoom BT-02 cell and LBC-1 charger, restoring power for field recording sessions. The single-pack format suits users who need a direct spare rather than a multi-unit kit.

Foldable Plug and Charge Indicator

The wall charger features a foldable flat pin that reduces bulk when stowed in a gear bag. Its LED shows red while charging and green once the cell reaches full capacity or stands by. The adapter accepts 100 to 240 V AC at 50 or 60 Hz and delivers 4.2 V DC at 600 mA for the supplied pack.

Lithium-Ion Cell with 1400 mAh Capacity

The battery uses lithium-ion chemistry rated at 3.7 V and 1400 mAh, yielding 5.18 Wh of energy. Build quality follows standard replacement specifications for the named Zoom models. Users who require longer runtimes or additional simultaneous spares will need extra packs beyond this single-unit offering.

Highlights

  • Replacement battery for Zoom Q4 and Q4n recorders
  • 1400 mAh lithium-ion cell delivers 5.18 Wh capacity
  • Foldable flat-pin wall charger fits 100–240 V AC outlets
  • 600 mA charge current with red-to-green LED status
  • Single pack includes one battery and one charger

Specifications

BrandKastar
ModelSLB-10A
Part NumberNOCAR-1B-SLB10A-J
TypeBattery & Charger
Pack1 Charger + 1 Battery
ChemicalLi-Ion
Capacity5.18 Wh
Dimensions3*2*2 Inch
FeaturesFoldable Flat Plug

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Questions about this item

How long will the 1400mAh lithium-ion cell last before it needs replacing?

The 3.7V lithium-ion battery is rated at 1400mAh and 5.18Wh; typical lithium-ion cells retain useful capacity for several hundred full charge cycles under normal use.

What limits the charger during continuous daily charging sessions?

The wall charger delivers 4.2V at 600mA, so the charge current is the limiting factor and a full recharge takes roughly two to three hours per cycle.

Does the charger get hot or noisy when left plugged in all day?

The compact AC adapter runs silently with no fan; it accepts 100-240V input and only warms slightly during the 600mA charge cycle.

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