Power fact sheet

Battery & charger for your OM System OM-1 Mark II

Interchangeable-lens digital camera (Micro Four Thirds)

Information from OM System on battery, charging and memory cards – as of 29/09/2026.

Battery: BLX‑1 (7.2 V)
Note on the battery: In the compatibility table from OM System, only the BLX‑1 is marked as compatible – not the BLH‑1 of the E‑M1 models
Shots per battery charge: approx. 500 (CIPA)
Video per battery charge: approx. 90 min (JEITA standard)
Charging in the camera: Yes – via USB‑C: with the USB-AC adapter F‑7AC with the camera switched on or off (switched off approx. 2 h 30 min, longer when switched on), with other USB PD devices with the camera switched off; the charging time depends on the USB device
Power via USB: Yes – via USB‑C with USB PD devices of at least 27 W (9 V/3 A, 15 V/2 A or 15 V/3 A); a charged battery must be inserted, and with the USB-AC adapter F‑7AC it charges at the same time
Vertical grip: Power Battery Holder HLD‑10 (available separately, for a second BLX‑1)
Memory cards: Slot 1: SD (UHS‑I/UHS‑II)
Slot 2: SD (UHS‑I/UHS‑II)
Weight: approx. 599 g with battery and memory card

Measurement conditions according to OM System: CIPA standard with KIOXIA KSDXU-A064G memory card, image stabiliser on, without flash; one figure, not split by monitor and viewfinder; video: JEITA standard; the German product page and the Japan site’s data sheet state approx. 500 shots, the English data sheet approx. 520.

Charging and power via USB: information from OM System on the camera – we have not tested whether it also charges replacement batteries in the camera.

Sources (16) · retrieved on 29/09/2026

OM System and OM-1 Mark II are trademarks or product names of their respective owners. Baxxtar is an independent brand and is not affiliated with OM System – the names only show which camera our products fit.

Battery check for your camera

Which Baxxtar battery fits?

According to OM System, the OM System OM-1 Mark II uses the BLX‑1 battery – Baxxtar offers it as a single battery, in a twin pack and in a set with a charger.

Baxxtar BLX‑1: 2600 mAh · 7.2 V · 18.7 Wh

View matching batteries & sets

Not your camera? Choose another model

Baxxtar BLX-1 battery, compatible with the OM System OM-1 Mark II

Switching cameras

Your Baxxtar BLX‑1 also fits …

According to our compatibility list, the Baxxtar BLX‑1 also fits these 2 cameras. If you switch to one of them, you can keep using your Baxxtar batteries and charger.

OM‑1
OM‑3

Battery planner

How many batteries do you need?

Set how much you shoot or film in a day – the planner works with the figures from OM System for the OM-1 Mark II.

Photos per day 800 Allow for a reserve – one extra batteryAccording to OM System, battery life is shorter with repeated autofocusing with the shutter button pressed halfway, with long image display on the monitor, when connected to a computer (except when powered via USB), with wireless LAN/Bluetooth switched on and at low temperatures.

Guide value

2battery charges

Battery in the camera + 1 spare battery – for example, the single battery.

A guide value, not a guarantee: based on approx. 500 shots per battery charge (CIPA figure from OM System for the OM-1 Mark II, a standardised comparison test) or approx. 90 minutes of video (JEITA standard). According to OM System, the actual runtime depends on the conditions of use; we have not measured these figures with Baxxtar batteries.

Products