Kastar 4-Pack BLM-1 Battery and LTD2 USB Charger - Dual Charge Kit

Our review of the Kastar 4-Pack BLM-1 Battery and LTD2 USB Charger finds it best suited for photographers who still use compatible Olympus cameras and want a compact, flexible spare power solution. The package combines four 7.4V 2100mAh lithium-ion replacement batteries with a dual-bay USB charger that can charge two batteries at once or switch plates to fit different battery shapes, making it a practical option for extended shoots or travel. The kit is straightforward, portable, and focuses on reliable runtime rather than advanced camera integrations.

Key Features

• Battery Type: The lithium-ion 7.4V 2100mAh batteries provide extended runtime for older Olympus models, reducing downtime between shots.
• Dual Charging: The LTD2 USB charger can charge two batteries simultaneously, which speeds turnaround when you have multiple spares to top up.
• Interchangeable Plate: The charger allows changing the plate to accommodate different battery shapes, offering flexibility for similar battery families.
• USB Power Input: With Micro-USB and Type-C input options and a supplied Micro USB cable, the charger works from common USB power banks and adapters for on-location charging.
• Status Indicators: Intelligent LED indicators show charging status and relative battery capacity, helping avoid guesswork about remaining charge.
• Portable Design: The charger is compact and the batteries are easy to carry, suited to photographers who need extra power without bulky equipment.

Who It's For

This kit is aimed at owners of older Olympus cameras listed as compatible, including EVOLT and Camedia models, who need multiple spare batteries and a simple USB-charging solution. It is a practical choice for hobbyists, travel photographers, and anyone who prefers carrying several pre-charged cells rather than relying on a single camera battery.

Photographers who require the fastest possible recharge times from a wall charger or those using modern mirrorless bodies with proprietary battery systems should look elsewhere, since this kit targets legacy Olympus batteries and emphasizes portability over ultra-fast charging equipment.

Pros & Cons

Pros

• Four high-capacity 2100mAh lithium-ion batteries extend shooting time between recharges.
• The LTD2 charger handles two batteries simultaneously, reducing wait time when multiple spares are used.
• Micro-USB and Type-C input options make it easy to charge from power banks or common USB adapters on location.
• LED indicators provide clear feedback on charging status so you know when batteries are ready.

Cons

• Designed for specific Olympus BLM-1 style batteries, so it is not suitable for most modern camera batteries.
• Charging speed is limited by the charger output and USB input, so it may be slower than dedicated high-power desktop chargers.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	2100mAh
Charger Input	5V 2-3A (15W)
Charger Output	8.4V 800mA (x1) or 800mA (x2)
Inputs	Micro-USB and Type-C (Micro USB cable included)
Compatible Models	Olympus BLM-1 series and listed Olympus EVOLT/Camedia cameras

Our Verdict

The Kastar 4-Pack BLM-1 Battery and LTD2 USB Charger is a sensible, value-focused kit for photographers using compatible Olympus cameras who need multiple spare batteries and flexible USB charging. It delivers solid run time, convenient dual charging, and easy portability, making it a reliable choice for travel or extended field shoots if you accept the limits of legacy battery compatibility and USB charging speeds.

Frequently Asked Questions

Are these batteries compatible with Olympus BLM-1 batteries?
Yes, the kit is compatible with Olympus BLM-1, BLM-1S and related BLM-01 series batteries listed in the product description.

Can the charger charge two batteries at once from a power bank?
Yes, the LTD2 charger supports charging two batteries simultaneously and can be powered via Micro-USB or Type-C from a power bank or USB adapter.

Does the kit include a USB cable?
Yes, a Micro USB cable is included; the charger also accepts Type-C input when using a suitable cable or adapter.