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Two rectangular batteries and a small wall charger with foldable prongs

Kastar

Kastar BT-02 2-pack battery and AC charger 1400mAh 3.7V

SKU CH-M654-NC5ZF

Two 1400 mAh lithium-ion batteries and a foldable-plug AC charger compatible with Zoom Q4 and Q4n recorders

  • TypeBattery & Charger
  • Pack1 Charger + 2 Batteries
  • ChemicalLi-Ion
  • Capacity5.18 Wh
  • Dimensions3*2*2 Inch
  • FeaturesFoldable Flat Plug
  • Two 1400mAh Li-Ion batteries extend recording time
  • Foldable flat plug makes the charger compact for travel
  • LED shows red while charging and green when full
  • AC 100-240V input works on mains worldwide
  • Replaces Zoom BT-02, 247-9036 and LBC-1 parts

Replacement power kit

The Kastar BT-02 kit includes two lithium-ion batteries and a compact AC wall charger. Each cell delivers 1400 mAh at 3.7 V for a total of 5.18 Wh. The package targets owners of the Zoom Q4 or Q4n Handy Video Recorder who need spare power for extended shoots. It also replaces the original Zoom BT-02 battery and LBC-1 charger.

Charger thermals and draw

The wall adapter accepts 100 to 240 V at 50 to 60 Hz and outputs 4.2 V at 600 mA. Its foldable flat pins reduce bulk during transport. A red LED shows active charging while a green LED signals standby or full charge. The low output current keeps heat and audible noise minimal during normal use.

Daily handling notes

Two batteries let you swap cells without interrupting recording. The foldable plug lies flat against the charger body, so the unit slips into a small pouch or pocket. No cable is included, so the charger plugs directly into a wall outlet or power strip. The kit covers the Zoom 247-9036 battery reference and LBC-1 charger reference.

Highlights

  • Two 1400mAh Li-Ion batteries extend recording time
  • Foldable flat plug makes the charger compact for travel
  • LED shows red while charging and green when full
  • AC 100-240V input works on mains worldwide
  • Replaces Zoom BT-02, 247-9036 and LBC-1 parts

Specifications

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

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Questions about this item

How do I install the Kastar BT-02 batteries and the AC wall charger with its foldable flat plug?

Insert the two 3.7V 1400mAh Li-Ion batteries into the Zoom Q4 or Q4n battery compartment following the polarity marks. Plug the charger's foldable flat pins into a 100–240V AC outlet; the LED shows red while charging and green when full.

What maintenance or replacement will the Kastar SLB-10A batteries and charger need later?

The 1400mAh Li-Ion cells will gradually hold less charge after many cycles; replace both batteries when recording time drops noticeably. Keep the charger's foldable pins clean and the ventilation slots clear; no other user-serviceable parts exist.

What limit appears first during sustained use of the Kastar BT-02 charger and batteries?

The charger delivers 4.2V at 600mA, so each 5.18 Wh battery takes several hours to recharge; during long shoots the recharge rate becomes the bottleneck before the cells overheat.

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