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Two Kastar BL-5B lithium-ion batteries and a compact charger with foldable flat plug and LED indicators

Kastar

Kastar BL-5B 2-Pack Battery & Smart LCD Charger for Mini Wireless Keyboard 2.4GHz Tecboss

SKU CH-85W3-E5S78

Two 890 mAh lithium-ion batteries and a foldable-plug LCD charger power compatible mini keyboards, compact cameras and handheld devices

  • Total capacity4.26 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions3 × 2 × 2 in
  • Key featuresFoldable Flat Plug
  • Two 890 mAh Li-Ion batteries extend shooting time
  • Smart LCD charger shows red while charging and green when full
  • Foldable flat plug makes the wall charger easy to pack
  • Works with Tecboss, YAGALA and other 2.4 GHz mini keyboards
  • 100–240 V input lets you charge worldwide

Replacement BL-5B Battery Kit

This Kastar set supplies two 3.7V lithium-ion cells rated at 890mAh each, together with a compact AC charger. It is intended for owners of compatible mini wireless keyboards, compact digital cameras and a range of portable audio devices that use the BL-5B form factor.

Upgrade from Single-Cell Packs

The bundle replaces a lone battery and a basic lead by adding a spare cell and a smart LCD charger that shows red while charging and green when full. The jump is worth it when a device sees daily use and downtime for a recharge would interrupt work or travel.

Suits Multi-Device Users

Photographers carrying a VJIANGER or Saneen 4K camera, keyboard users with a Tecboss or YAGALA mini controller, and radio owners with a Tecsun Q3 or X3 all gain a ready spare. Buyers who need a different battery chemistry or a higher-capacity cell should look elsewhere.

How it compares

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

Price $11.99
Cheaper than about 75% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBL-5B
Part numberMCH-2B-BL5B-D
Total capacity4.26 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

What are the exact dimensions of the charger so I know if it fits my power strip?

The charger measures 3 by 2 by 2 inches and has a foldable flat plug for tight spaces.

How do I connect the charger to the wall and know when the batteries are full?

Plug the foldable flat pin into any 100 to 240 volt AC outlet; a red LED means charging and green means full or standby.

When should I replace the two BL-5B batteries included in the pack?

Each 3.7 volt 890 mAh lithium-ion cell lasts for hundreds of cycles; replace them when run time drops noticeably.

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