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OM SYSTEM OLYMPUS BLH-1 Rechargeable Battery, black

4.7 4.7 out of 5 stars 313 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Camera Batteries by Olympus
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List Price: $69.99

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Purchase options and add-ons

Number of Batteries 1 Lithium Ion batteries required. (included)
Brand Olympus
Battery Cell Composition Lithium Ion
Recommended Uses For Product Camera
Unit Count 1.0 Count

About this item

  • Replacement battery for the Olympus E M1 Mark II
  • 7.4V, 1720mAh, 12.8W
  • Approx. 2 hours for full charge when used with the Olympus BCH 1 battery charger
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Price-14% $59.95
List: $69.99		$45.95$24.99$39.99$24.99-29% $32.00
List: $44.99
Delivery
Get it as soon as Tuesday, May 14
Get it May 13 - 16
Get it as soon as Sunday, May 12
Get it as soon as Sunday, May 12
Get it as soon as Sunday, May 12
Get it as soon as Sunday, May 12
Customer Ratings
4.74.7 out of 5 stars313
2.42.4 out of 5 stars2
4.34.3 out of 5 stars408
4.64.6 out of 5 stars44
4.34.3 out of 5 stars353
4.64.6 out of 5 stars598
Battery life
4.4
—
3.0
4.2
2.5
4.1
Value for money
3.7
—
3.0
4.5
2.8
3.9
Sold By
Amazon.com
Adorama
Recorders-com
Big Mike's Electronics
Recorders-com
Amazon.com
capacity
1720 milliamp hours
1900 milliamp hours
925 milliamp hours
1720 milliamp hours
925 milliamp hours
1350 milliamp hours
battery quantity
1 lithium ion
1 lithium ion
1 lithium ion
2 lithium ion
1 lithium ion
1 lithium ion
voltage
7.4 volts
7.4 volts
3.7 volts
7.4 volts
3.7 volts
3.6 volts
reusability
Rechargeable
Rechargeable
Rechargeable
Rechargeable
Rechargeable
Rechargeable
compatible devices
Solar
Camera, Camcorder
camera,recorder
Camera
camera
Camera

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OM SYSTEM OLYMPUS BLH-1 Rechargeable Battery, black

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What's in the box

  • BLH-1 Battery

    • Product Description

    Replacement battery for the Olympus E M1 Mark II. Approx. 37 percent increase in capacity over BLN 1 battery with approx. 440 shots per charge. 7.4V and 1720 mAh power.

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    313 global ratings

    Top reviews from the United States

    Translate all reviews to English
    JWMS
    5.0 out of 5 stars Works great
    Reviewed in the United States on January 29, 2024
    Verified Purchase
    I have had these batteries for six months and they are great. They charge very fast and keep the charge.
    Helpful
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    icexe
    5.0 out of 5 stars Expensive but worth it
    Reviewed in the United States on December 29, 2019
    Verified Purchase
    My previous Olympus cameras used BLN-1 batteries, and third-party options had always worked almost as good as the Olympus batteries, and getting two replacement batteries for less than half the price of one original is a bargain that was hard to pass up.
    But finding good BLH-1 batteries for my EM1-II has proven to be a challenge. I tried several different third party brands and none of them last even half as long as the originals, and one swelled up so badly that it could no longer fit in the camera. Not sure why that's the case with the BLH-1 clones, but after my third set of crappy replacements, I finally gave in an bought the Olympus brand.

    The good thing I can say about this battery is that it will give you the longest lasting and most stable performance for your EM1-II. The downside is the price and the charger that comes with it. Third-party chargers are way better since they offer options like multiple battery charging and/or the ability to be plugged directly into a socket instead of dealing with wires.
    2 people found this helpful
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    Erik T
    5.0 out of 5 stars Best option for most
    Reviewed in the United States on September 10, 2020
    Verified Purchase
    I conducted two tests with the Olympus BLH-1 and the Wasabi and Power2000 fully decoded clones. The first test was a controlled-lighting tripod-mount time lapse on an E-M1.2 at 1 minute intervals with the screen active. The second test was a constant current discharge to 7.2V at a rate which resulted in discharge time roughly matching the number of pictures taken in the first test. The 7.2V cut-off point was chosen as that appears to be when the E-M1.2 powers off - batteries consistently measured around 7.4V after shut-off, which at a 500mA current drops to around 7.2V.

    As is to be expected, the Olympus BLH-1 matched the best of the two clones that I tested in terms of capacity at around 1500mAh. The Wasabi 2 pack had one battery also measure around 1500mAh while the other was only around 1200mAh. Meanwhile both Power2000 batteries only measured around 800mAh.

    So why would I recommend the Olympus BLH-1 for most when the Wasabi 2 pack costs the same and provides anywhere from 80% to 100% the capacity? Well, the variability is one mark against the Wasabi - it's clear they're not using a single supplier/specification for their 18500 cells given the variance I observed. Second is that the circuitry within the battery isn't quite on par with the Olympus as there's no mechanism for charge-balancing between the two cells. Charge-balancing circuitry ensures that both cells are always fully charged by effectively charging each cell individually. The BLH-1 clones lack this circuitry and instead charge the two cells serially, which over many charge-discharge cycles invariably results in one cell having a higher state of charge than the other due to minute differences in charge rate between them. This results in a much faster reduction in usable battery capacity as the battery will stop charging soon as one cell is fully charged even if the other is only half charged, while on the discharge side the camera will turn off soon after one cell is mostly 'discharged'.
    5 people found this helpful
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    Christoph Geiss
    5.0 out of 5 stars after poor experiences with cheaper brands - stick to OEM
    Reviewed in the United States on March 17, 2024
    Verified Purchase
    Over the years I have cheaped out from time to time, and it's usually not worth it. My off-brand batteries (though, presumably from an OK supplier) have all expanded and won't fit any longer. Now that my batteries can be charged with USB-C in-camera I would not trust third party batteries any longer.
    OEM batteries cost an arm and a leg, but for longer trips I now take two/three OEM bateres and a big USB-C power bank, and recharge in the field.
    Helpful
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    Juan C.
    5.0 out of 5 stars xxx
    Reviewed in the United States on February 19, 2024
    Verified Purchase
    Muy buena calidad del producto.
    Helpful
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    dixon-f-stop|vector
    5.0 out of 5 stars Nothing works like the original Oly batteries
    Reviewed in the United States on August 28, 2018
    Verified Purchase
    The only thing to dislike is the price of the Olympus batteries. I also have some non-OEM batteries, but they don't have anywhere near the life of the Olympus batteries, and the meter on my OM-D EM-1 Mark II will not accurately gauge the percentage of battery life left in the generic batteries. Yeah, the generics were cheap, but at least they came with an awesome compact charger, which works great with the genuine Olympus batteries.

    Seriously, pay the $60 for the Oly batteries, two of them outlast 4 of the generics, and they hold on to their charge when not in use much longer, and you will know when to swap a depleted one out before your camera shuts off.
    10 people found this helpful
    Helpful
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    Rudy Andl
    5.0 out of 5 stars Excellent back up
    Reviewed in the United States on May 26, 2023
    Verified Purchase
    its a battery that works according to specs -
    the visual of an off brand battery melting in my M1 mark iii gave me no choice but to go with the home team -
    you have olympus qaulity for olympus quality cameras - fit - finish - performance-
    2 people found this helpful
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    Bill Bigelis
    4.0 out of 5 stars Its Expensive, but worth it
    Reviewed in the United States on May 29, 2020
    Verified Purchase
    Having learned the hard way about 3rd party battery 'replacements', I didnt even bother with my new Olympus EM1 MkIII, went straight to the vendor.
    It fits perfectly in the camera, slides in and out easily. 3rd party batteries frequently dont fit 'quite' right - i've had more than one get stuck in the camera requiring some tool work to remove.
    Holds a charge well. Lasts long. (these are other faults of 3rd party batteries, not holding a charge, or having a sudden drop off in charge - i.e., one moment the battery shows full, the next youre getting battery empty notice)
    So, for professional phtographers, I always recommend spending more and going with the OEM battery.
    Helpful
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    Top reviews from other countries

    Translate all reviews to English
    Omid
    5.0 out of 5 stars Perfect
    Reviewed in Canada on March 5, 2023
    Verified Purchase
    Big like
    Report
    Amazon Customer
    5.0 out of 5 stars Excelente Precio .
    Reviewed in Mexico on February 2, 2020
    Verified Purchase
    Original a un excelente precio.
    Report
    ronald embree
    5.0 out of 5 stars What all Olympus cameras should have
    Reviewed in Canada on January 16, 2021
    Verified Purchase
    My photo shows the small battery from the EM5mk3 and you can see a big difference to the EM1mk2 battery.
    Really nice to get upto a 1000 shots from a camera compared to the measly 300+ from the smaller Ollies.
    No need to buy 3rd party batteries here as you wont need as many.
    Customer image
    ronald embree
    5.0 out of 5 stars What all Olympus cameras should have
    Reviewed in Canada on January 16, 2021
    My photo shows the small battery from the EM5mk3 and you can see a big difference to the EM1mk2 battery.
    Really nice to get upto a 1000 shots from a camera compared to the measly 300+ from the smaller Ollies.
    No need to buy 3rd party batteries here as you wont need as many.
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    Marco A.
    5.0 out of 5 stars Producto original
    Reviewed in Mexico on December 23, 2019
    Verified Purchase
    Producto Original
    Report
    Juan M.
    1.0 out of 5 stars Recibí una batería falsa
    Reviewed in Mexico on July 5, 2022
    Verified Purchase
    A finales del año pasado compré 2 baterías Olympus BLH-1 de Amazon MX. Las dos tienen la misma etiqueta de importación. Una la abrí en ese momento y era igual que las que ya tenía originalmente. La otra no la necesité hasta ahora y al abrirla me encontré con que es completamente distinta. No venía en la caja protectora de plástico translúcido. No tiene la marca Olympus, las etiquetas están mal pegadas y no tienen el suaje que utiliza Olympus. El plástico es evidentemente de menor calidad (las baterías originales tienen secciones brillantes y secciones mate). Sin embargo, ambas cajas tenían el sello de garantía original. Tras mayor inspección, pude ver que la caja de la batería falsa tenía una cinta adhesiva transparente en una cara lateral, y desde el interior se puede ver que fue cortada con una cuchilla para extraer la batería original y reemplazarla con la falsa. Y luego, la etiqueta de importación de Amazon se colocó encima. Desafortunadamente, ya pasó el periodo de retornar la batería y ahora tendré que vivir con el rendimiento inferior de la batería, si es que funciona. Las dos baterías se vendieron como genuinas y se compraron directo a Amazon, elegibles para Amazon Prime. Lección: abrir y revisar el producto en cuanto llegue.
    Customer image
    Juan M.
    1.0 out of 5 stars Recibí una batería falsa
    Reviewed in Mexico on July 5, 2022
    A finales del año pasado compré 2 baterías Olympus BLH-1 de Amazon MX. Las dos tienen la misma etiqueta de importación. Una la abrí en ese momento y era igual que las que ya tenía originalmente. La otra no la necesité hasta ahora y al abrirla me encontré con que es completamente distinta. No venía en la caja protectora de plástico translúcido. No tiene la marca Olympus, las etiquetas están mal pegadas y no tienen el suaje que utiliza Olympus. El plástico es evidentemente de menor calidad (las baterías originales tienen secciones brillantes y secciones mate). Sin embargo, ambas cajas tenían el sello de garantía original. Tras mayor inspección, pude ver que la caja de la batería falsa tenía una cinta adhesiva transparente en una cara lateral, y desde el interior se puede ver que fue cortada con una cuchilla para extraer la batería original y reemplazarla con la falsa. Y luego, la etiqueta de importación de Amazon se colocó encima. Desafortunadamente, ya pasó el periodo de retornar la batería y ahora tendré que vivir con el rendimiento inferior de la batería, si es que funciona. Las dos baterías se vendieron como genuinas y se compraron directo a Amazon, elegibles para Amazon Prime. Lección: abrir y revisar el producto en cuanto llegue.
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