Is the display power of the charger accurate?

In my experience it is adequately accurate

I just purchased this charger, and I love the plastic battery cases that came with the batteries. Is it possible to purchase these separately?

Sorry, we do not have a separate case for sale.

If I leave the batteries in this charger and use it as a carrying case will the batteries discharge?

I do this exact thing. I don’t notice any loss of charge over a few days of storing a fully charged battery.

Does this actually with with gopro hero 9 black? the last one i ordered said it did, but it did not.

Assuming the 10 and the 9 are the same battery then yes. The picture shows an accurate image of the product I received. I like the 9 batteries better because they hold more amp hours than the 10 battery. Hope that helps. Just a note, when I ordered mine, it came with 3 batteries, not 2 as described here?

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TOMSHEIR 2000mAh Hero 12/11/10/9 Battery 2-Pack and 3-Channel USB Charger with High Speed Micro SD Card Reader Function (Fully Compatible with Gopro Hero 12 11 10 9 Black Official)

Product ID: 557827961

Details

Battery capacity
2000 Hour
Battery cell composition
Lithium Ion
Brand
TOMSHEIR
Number of batteries
2 Lithium Ion
Recommended uses for product
Camera

⚡3-battery fast charging in 2.5 hrs

💾100MB/s high-speed Micro SD card reader

🔋2000mAh high-capacity battery

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₩120947

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In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎥 Power up your adventure with pro-grade endurance and smart charging!

POWER THAT LASTS - 2000mAh batteries deliver extended shooting time—up to 120 mins at 4K/30FPS, so you never miss a moment.
SMART SECURE DESIGN - Built-in USB & Type-C ports plus magnetic cover keep your gear safe and cables minimal—travel light, shoot heavy.
TRIPLE CHARGE STORE - Charge 3 batteries simultaneously while securely storing 3 Micro SD cards—ultimate convenience for pros on the move.
SEAMLESS COMPATIBILITY - Fully decoded chip ensures flawless performance with GoPro Hero 9, 10, and 11—OEM-level reliability without the premium price.
CERTIFIED SAFETY DURABILITY - UL, FCC, CE, ROHS certified with multi-layer protection against overcharge, short circuit, and more—trust your gear to last.

The TOMSHEIR 2000mAh 2-pack batteries and 3-channel USB charger offer OEM-level compatibility with GoPro Hero 9, 10, and 11 cameras. Featuring fast 2.5-hour charging for three batteries, integrated high-speed Micro SD card reading at 100MB/s, and a compact, travel-friendly design with magnetic cover and built-in USB/Type-C ports. Certified for safety and durability, this kit ensures longer shooting times and reliable power management for content creators on the go.

Specifications

ASIN	B09KRY8VD2
Amperage	2 Amps
Antenna Location	Camera
Battery Capacity	2000 Milliampere Hour (mAh)
Battery Cell Type	Lithium Ion
Battery Weight	15 Grams
Best Sellers Rank	#96,050 in Electronics ( See Top 100 in Electronics ) #99 in Acition Camera Battery Chargers
Brand	TOMSHEIR
Compatible Phone Models	Gopro Hero 11
Customer Reviews	4.3 4.3 out of 5 stars (574)
Item Dimensions	25 x 25 x 25 millimeters
Item Weight	100.7 Grams
Manufacturer	TOMSHEIR
Model Number	G39
Number of Batteries	2 Lithium Ion batteries required. (included)
Reusability	Rechargeable
UPC	787108722460
Voltage	5 Volts

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