Kastar 3-Pack DMW-BLB13 Battery and LTD2 USB Charger - Extra Runtime

In this review the Kastar 3-Pack DMW-BLB13 Battery and LTD2 USB Charger is judged on its practicality for photographers who use older Panasonic Lumix bodies. The bottom line: this kit is for users who need reliable spare power and a flexible USB charging solution. The reviewer found the 1650mAh Lithium-Ion cells and the dual-bay charger useful for extended shoots, and the ability to charge two batteries at once makes it a straightforward backup for travel or event work.

Key Features

• Battery Capacity: The 1650mAh, 7.4V batteries provide measurable extra runtime so photographers can shoot longer between charges.
• Dual Charging: The LTD2 charger charges two batteries at the same time, reducing downtime when multiple spares are in use.
• Interchangeable Plate: The charger plate can be changed to fit different batteries, adding flexibility for users with multiple battery types.
• USB Power Input: With Micro-USB and Type-C inputs and a supplied Micro USB cable, the charger works from common 5V power sources for field charging.
• Intelligent LED: The LED display shows charging status and remaining capacity so users can see progress at a glance.
• Charger Output: The charger delivers 8.4V at 800mA per bay, offering a predictable charge rate for the compatible cells.

Who It's For

This kit is aimed at hobbyists and pros who still use compatible Panasonic Lumix models such as the DMC-G1, G2, G10, GF1 and GH1 and who want extra batteries that match the original style and voltage. It is particularly useful for event shooters, travel photographers, and anyone who prefers carrying multiple spare batteries rather than relying on a single original pack.

Those who should look elsewhere include photographers who need OEM-branded batteries for warranty reasons or users of modern mirrorless cameras that use different battery models. Also, if you require ultra-fast charging or manufacturer support, an original Panasonic charger may be preferable.

Pros & Cons

Pros

• Three replacement batteries increase available shooting time without frequent recharging.
• The dual-bay LTD2 charger saves time by charging two batteries simultaneously.
• USB inputs and included cable make field charging from power banks and common adapters convenient.
• LED indicators provide clear status and approximate capacity information.

Cons

• The charge rate is moderate at 800mA per bay, so batteries take a typical amount of time to reach full charge compared with faster chargers.
• The pack is a third-party solution, so users seeking OEM support may prefer original batteries and chargers.

Specifications

Brand	Kastar
Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	1650mAh
Charger Input	5V 2-3A (15W)
Charger Output	8.4V 800mA per bay (x1 or x2)
Inputs	Micro-USB and Type-C (Micro USB cable included)

Our Verdict

The Kastar 3-Pack DMW-BLB13 and LTD2 USB charger is a practical, cost-effective option for owners of compatible Panasonic Lumix cameras who need dependable spares and flexible charging. With three 1650mAh batteries, dual charging and USB inputs, it delivers good value for travel and event use, though those needing the fastest charge speeds or OEM support should consider alternatives.

Frequently Asked Questions

Will these batteries work in my Panasonic DMC-GF1?
Yes, the pack is listed as compatible with Panasonic DMW-BLB13 series batteries used in the DMC-GF1 and several other Lumix models.

Can the charger charge two batteries at once from a power bank?
Yes; the LTD2 accepts 5V USB input and can charge two batteries simultaneously when connected to a suitable power source.

Does the kit include both Micro-USB and Type-C cables?
The kit includes a Micro USB cable and supports both Micro-USB and Type-C inputs on the charger for flexibility.