According to a vendor, it is 750 mAh capacity; I use them for smoke alarms (hardwired installed) and haven't replaced one yet. Generally standard 9v batteries would die after a power outage, ive replaced them all with lithium no problems in since.

are these l522bp-2 the same as advance lithium l522 ?

Nope, different. "9V Ultimate lithium" are Energizer's current product. Energizer '9V Advanced lithium' has been discontinued so I'd bet that those are old stock. Be sure to check the expiration date. BP-2 just indicates there are two batteries in each individual package. No designation, A plain BP, or Bp-1 would indicate a single battery per package. BP4 would be a 4 pack, etc.

Life span in smoke alarms?

Lasted only 1 year 5 months in my smoke detector.

Is there any chance of these batteries used in a smoke detector exploding and causing a fire?

Virtually none. This type of battery constuction is by far the most stable of all common types. These are much safer and more stable than NiMH such as rechargeables or "standard" batteries which are generally Alkaline. I use these in any sensitive devices or devices not used often but important. As such I use these in my own smoke detectors and have never had any issue. For what it is worth I've been a FireFighter for 25+ years, so yes they are safe. The one thing to be aware of is that if your smoke detector is hard wired and requires a rechargeable battery as a backup power source then do not use these. These are not rechargeable batteries.

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Energizer Ultimate Lithium 9V Batteries (2 Pack), Lithium 9 Volt Batteries

Product ID: 321590963

Details

Battery capacity
9 Volts
Battery cell composition
Lithium Metal
Brand
Energizer
Number of batteries
2 Lithium
Recommended uses for product
Camera

⚡20% longer life vs. MAX

🕰️10-year shelf life

❄️🔥Works -40°F to 140°F

Rp1433819

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Description

⚡ Energize your essentials with power that never quits!

DECADE LONG BACKUP - Holds power for up to 10 years in storage—perfect for emergency kits, smoke detectors, and peace of mind.
POWER THAT OUTLASTS - Lasts up to 20% longer in toys than Energizer MAX batteries, so your devices keep going when others quit.
EXTREME TEMPERATURE READY - Reliable performance from -40°F to 140°F means your batteries won’t quit, no matter the season or setting.
LEAK RESISTANT DURABILITY - Engineered with leak-resistant construction to protect your valuable devices and ensure safety.
LIGHTWEIGHT LONG LASTING - 25% lighter than standard alkaline 9V batteries, reducing bulk without sacrificing power.

Energizer Ultimate Lithium 9V Batteries deliver up to 20% longer life in toys compared to Energizer MAX, operate reliably in extreme temperatures from -40°F to 140°F, and feature leak-resistant construction. These lightweight batteries weigh 25% less than standard alkaline 9V batteries and maintain charge for up to 10 years in storage, making them ideal for toys, clocks, smoke detectors, and emergency backups.

Specifications

ASIN	B01684J7P0
ASIN	B01684J7P0
Antenna Location	Camera
Batteries	2 Lithium Metal batteries required. (included)
Battery Capacity	9 Volts
Battery Cell Type	Lithium Metal
Battery Weight	34 Grams
Best Sellers Rank	4,067 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 464 in Disposable Household Batteries
Brand Name	Energizer
Compatible Phone Models	L522BP2
Customer Reviews	4.7 4.7 out of 5 stars (5,621)
Customer reviews	4.7 4.7 out of 5 stars (5,621)
Delivery information	We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Department	Unisex-Adult
Global Trade Identification Number	00039800911575
Guaranteed software updates until	unknown
Included Components	Battery Pack
Is discontinued by manufacturer	No
Item Dimensions	18 x 94 x 114 millimetres
Item Type Name	9v-batteries
Item Weight	0.06 Kilograms
Item model number	30039800911576
Manufacturer	Energizer Batteries
Manufacturer	Energizer Batteries
Model Name	ENR L522BP2.H4 LITH 9V-2 EMOD
Model Number	30039800911576
Number of Batteries	2 Lithium Metal batteries required. (included)
Product Dimensions	1.78 x 9.4 x 11.43 cm; 60 g
Reusability	Single Use
UPC	039800911575
Unit Count	2.0 count
Voltage	9 Volts

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Rp1433819

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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