Kastar BLS-5 / PS-BLS5 / BLS-50 Battery + Dual USB Charger - Compact

In this review the Kastar replacement pack is presented as a practical power solution for Olympus shooters needing longer runtime and flexible charging. The package pairs a 7.4V, 2100mAh lithium-ion battery compatible with BLS-5, PS-BLS5 and BLS-50 battery types with an intelligent dual USB charger that can top two batteries at once and accepts both Micro-USB and Type-C input. For photographers who travel or shoot long sessions, the key reason to consider this kit is the combination of higher capacity spare power and a compact, multi-input charger that fits easily into camera bags.

Key Features

• High capacity battery: The 2100mAh lithium-ion cell provides extended shooting time compared with many original batteries, reducing interruptions for recharging during outings.
• Dual battery charging: The charger can charge two batteries simultaneously, so users can maintain a pair of ready spares without waiting for a single slot to free up.
• Multiple input options: With both Micro-USB and Type-C inputs and a Micro USB cable included, the charger works with common power packs and wall adapters for flexible charging on the go.
• Smart LED indicators: The intelligent LED display shows charging status and battery capacity so photographers know when a cell is ready without guesswork.
• Switchable plate: The charger lets you change the charging plate to accommodate different battery types, improving compatibility across Olympus BLS-5 series cells.

Who It's For

This kit is best for casual and enthusiast Olympus camera owners who need a reliable spare battery and a small, versatile charger to keep multiple batteries topped up between shoots. It suits travel photographers who value compact gear and the convenience of USB power delivery from power banks or common adapters.

It is less appropriate for users who require manufacturer warranty support tied to original-brand batteries or those who prefer factory chargers with proprietary connectors. Professional users who must strictly adhere to brand-authorized power accessories may want to check service requirements before replacing batteries with third-party options.

Pros & Cons

Pros

• Higher 2100mAh capacity offers noticeably longer runtime than many stock cells.
• Dual simultaneous charging saves time and keeps two spares ready for extended shoots.
• USB input options and included Micro USB cable make charging from common sources straightforward.

Cons

• Third-party batteries may not match every behavior of OEM cells and some users prefer original-brand replacements for guaranteed compatibility.

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)
Charging Ports	Micro-USB and Type-C input (Micro USB cable included)

Our Verdict

The Kastar BLS-5 / PS-BLS5 / BLS-50 battery and dual USB charger bundle is a practical, cost-effective option for Olympus camera owners who need extended runtime and flexible charging. It offers sensible capacity, simultaneous charging and convenient USB inputs that add real value for travel and weekend shooters, though those requiring original-brand components for service reasons should take that into account.

Frequently Asked Questions

Will this battery work in my Olympus E-PL10?
Yes, the pack is compatible with models that use BLS-5 / PS-BLS5 / BLS-50 battery types, including the Olympus E-PL10.

Can the charger power from a USB power bank?
Yes, the charger accepts Micro-USB or Type-C input and can be powered from a standard USB power bank or compatible wall adapter.

Does the kit include a charging cable?
The package comes with a Micro USB cable; a Type-C cable is not listed as included but Type-C input is supported.