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Three small rectangular lithium-ion batteries and a compact dual-slot USB charger with LCD screen

Kastar

Kastar 3-Pack BT-02 Battery & LTD2 USB Charger for Zoom Q4

SKU CH-WG7R-AD9CG

Three lithium-ion batteries and a dual-slot USB charger with LCD status display for Zoom Q4 and Q4n recorders

  • Total capacity5.18 Wh
  • Pack contents1 Charger + 3 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
  • Three 1400mAh Li-Ion batteries power Zoom Q4 recorders
  • Dual-slot USB charger fills two packs at once
  • Micro-USB and Type-C inputs accept any 5V source
  • LCD screen shows real-time charge level per cell
  • Replaces Zoom BT-02 and LBC-1 for direct compatibility

Three-battery kit for Zoom Q4

This kit supplies three replacement lithium-ion batteries and a dual-slot USB charger for the Zoom Q4 and Q4n handy video recorders. Each cell delivers 3.7 V and 1400 mAh for 5.18 Wh of capacity. The pack suits creators who need extended recording time without relying on a single internal battery.

Dual USB charger with swappable plates

The LTD2 charger accepts 5 V at 2-3 A through either Micro-USB or USB-C and can charge two batteries simultaneously at 4.2 V 800 mA each. Interchangeable plates let the same unit handle Samsung SLB-10A, JVC BN-VH105 and Zoom BT-02 cells. An integrated LCD shows charge status and remaining capacity for both slots.

Low-heat lithium-ion cells

Lithium-ion chemistry keeps heat output minimal during typical recording sessions and the charger runs from any standard USB power source. No active cooling is required and operation stays quiet. The combined pack weighs little and fits in a small accessory pouch for field use.

How it compares

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

Price $14.99
Cheaper than about 60% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameSLB-10A
Part numberCH-LTD2-3B-SLB10A-J
Total capacity5.18 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 3 in
In the box
Pack contents1 Charger + 3 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How long will one 1400mAh battery run the Zoom Q4 before it needs recharging?

Each 3.7V 1400mAh cell stores 5.18 Wh; actual recording time depends on the Q4's power draw and settings.

Does the LTD2 charger get hot or noisy when both slots are used for hours?

The charger outputs 4.2V at 800 mA per slot from a 5 V 2-3 A input; it has no fan, so it runs silently and stays warm rather than hot.

Which cable and power brick do I need to start charging right away?

A Micro-USB cable is included; you must supply any 5 V USB source such as a phone charger, power bank or computer port.

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