Kastar 4-Pack BLM-1 Battery and LTD2 USB Charger Replacement

In this review the Kastar 4-Pack BLM-1 batteries with the LTD2 USB dual charger are evaluated for photographers who need trusted spares for older Olympus cameras and grips. The bottom line: this kit is best for users who want a high-capacity, portable replacement solution that charges two batteries at once and supports both Micro-USB and Type-C inputs. The review finds the batteries deliver solid runtime for legacy Olympus models and the intelligent LED charger makes it easy to monitor charge status on the go.

Key Features

• Lithium-Ion cells: The 2100mAh capacity provides longer shooting sessions between charges for cameras that accept BLM-1 style batteries.
• Dual battery charging: The LTD2 charger can charge two batteries simultaneously to reduce downtime between shoots.
• Swapable plates: The charger plate can be changed to fit different battery variants, adding flexibility for users with mixed batteries.
• Multiple input options: Micro-USB and Type-C inputs let you power the charger from power banks, USB adapters, or laptop ports for travel convenience.
• LED charge indicators: The intelligent LED display shows charging status and remaining capacity so you can see progress at a glance.
• Compact and portable: With a 5V 2-3A input and a small included Micro USB cable, the charger is easy to carry in a camera bag.

Who It's For

This kit is aimed at photographers who own legacy Olympus cameras such as the E-1, E-3, E-30, E-520, EVOLT E-300, E-330, and E-510, or who use Olympus HLD-2 and HLD-4 battery grips. It suits travel shooters, studio workers who need spare batteries, and hobbyists who want a compact charging solution that works from USB power sources.

Those who should look elsewhere include users who require factory OEM batteries for warranty or official service reasons, or photographers who need the latest high-discharge batteries for very long continuous shooting or video recording beyond what 2100mAh cells typically deliver.

Pros & Cons

Pros

• High capacity 2100mAh cells extend shooting time compared with many older replacements.
• Charger can handle two batteries at once, saving time between sessions.
• Multiple input options and included Micro USB cable make the charger convenient for travel.
• Intelligent LED indicators simplify monitoring battery charge and capacity.

Cons

• Not an OEM Olympus product, so some users may prefer original-brand batteries for warranty compatibility.
• Charger output is limited to 800mA per slot, which means charging two batteries will take longer than high-current 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 / 800mA x2
Inputs	Micro-USB and Type-C (Micro USB cable included)

Our Verdict

The Kastar 4-Pack BLM-1 batteries with the LTD2 USB dual charger are a practical, cost-effective replacement for owners of older Olympus bodies and grips who need dependable spare power and a portable charging option. The kit balances decent 2100mAh capacity with USB convenience, making it good value for photographers who want more runtime without carrying bulky chargers.

Frequently Asked Questions

Will these batteries work in Olympus E-3?
Yes, the batteries are compatible with Olympus E-3 and other listed models that accept BLM-1 style batteries.

Can the charger charge two batteries at the same time?
Yes, the LTD2 charger supports charging two batteries simultaneously, with an output of 800mA per slot when both are charging.

Does the kit include a Type-C cable?
The kit includes a Micro USB cable and the charger supports Type-C input, so a Type-C cable may be needed if you prefer that connection.