Has anyone had a problem with them being a bit larger than a standard alkaline 9-volt battery? I read some brands are tight in smoke detectors

They are slightly larger than normal 9v batteries. If you have the battery terminals that snap onto the battery, you might be ok. I have the type of smoke alarm that you slide the battery into and it’s supposed to “mate itself”. Because of the size difference and the battery being really squishy (not rigid) they did not work for me- I had to return all 8.

Are these batteries made in China or where?

While my personal belief is that it is safe to assume they are made in China, there is nothing on the batteries or on the packaging that indicates the country of origin.

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Enegitech 9V Lithium Battery, 9 Volt Lithium Battery 1200mAh for Smoke Detector, Fire Alarm, Keyless Entry Door Lock, Multimeter, Metal Detector Non-Rechargeable 4 Pack

Enegitech 9V Lithium Battery, 9 Volt Lithium Battery 1200mAh for Smoke Detector, Fire Alarm, Keyless Entry Door Lock, Multimeter, Metal Detector Non-Rechargeable 4 Pack

Product ID: 53934015

Details

Battery Capacity
1200 Milliamp
Battery Cell Composition
Lithium
Brand
Enegitech
Number of Batteries
4 Lithium Ion
Recommended Uses For Product
Camera Digital

⏳10-year shelf life

🔋1200mAh high capacity

🌡️Extreme temp -20°C to 60°C

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€ 36.02

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power that outlasts your hustle — stay charged, stay ahead!

BUILT FOR EXTREMES - Smart PTC protection ensures flawless performance from freezing cold to scorching heat (-20°C to 60°C).
VERSATILE POWERHOUSE - Perfect for smoke detectors, fire alarms, keyless entry, multimeters, metal detectors, and more—one battery to rule them all.
DECADE LONG RELIABILITY - Up to 10 years shelf life with <1% self-discharge per year keeps your devices ready for the long haul.
FAST FLASH CONSISTENT PERFORMANCE - Ultra-short recycle time means your devices fire up instantly every time, no lag, no downtime.
DOUBLE THE POWER DOUBLE THE CONFIDENCE - 1200mAh capacity lasts 2x longer than standard 600mAh batteries—never worry about unexpected power loss.

Enegitech 9V Lithium Batteries deliver a robust 1200mAh capacity, providing twice the runtime of typical lithium batteries. Engineered with smart PTC protection, they operate reliably across extreme temperatures (-20°C to 60°C) and boast an impressive 10-year shelf life with minimal self-discharge. Ideal for critical devices like smoke detectors, fire alarms, and high-drain electronics, these non-rechargeable batteries ensure uninterrupted performance and peace of mind.

Specifications

ASIN	B076MV1Z3P
Antenna Location	Camera,Digital,Smoke Detectors
Battery Capacity	1200 Milliamp Hours
Battery Cell Type	Lithium Manganese Dioxide
Battery Weight	140 Grams
Best Sellers Rank	#121,851 in Health & Household ( See Top 100 in Health & Household ) #92 in 9V Batteries
Brand	Enegitech
Built-In Media	Battery Pack
Customer Reviews	4.7 4.7 out of 5 stars (362)
Item Type Name	9v, lithium, battery, 1200mah, non-rechargeable, li-ion, battery.
Item Weight	141 Grams
Manufacturer	Enegitech
Model Name	9V
Model Number	9V 1200mAh
Number of Batteries	4 Lithium Ion batteries required. (included)
Reusability	Single Use
UPC	611677932503
Unit Count	4.0 Count
Voltage	9 Volts
Warranty Description	1 year manufacturer

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