--- product_id: 316513149 title: "Energizer Ultimate Lithium 9V Batteries (1 Pack), Lithium 9 Volt Batteries" brand: "energizer" price: "£18.14" currency: GBP in_stock: true reviews_count: 8 category: "Energizer" url: https://www.desertcart.co.uk/products/316513149-energizer-ultimate-lithium-9v-batteries-1-pack-lithium-9-volt store_origin: GB region: United Kingdom --- # 20% longer life vs MAX 10-year shelf life Works -40°F to 140°F Energizer Ultimate Lithium 9V Batteries (1 Pack), Lithium 9 Volt Batteries **Brand:** energizer **Price:** £18.14 **Availability:** ✅ In Stock ## Summary > ⚡ Energize your essentials with power that never quits! ## Quick Answers - **What is this?** Energizer Ultimate Lithium 9V Batteries (1 Pack), Lithium 9 Volt Batteries by energizer - **How much does it cost?** £18.14 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/316513149-energizer-ultimate-lithium-9v-batteries-1-pack-lithium-9-volt) ## Best For - energizer enthusiasts ## Why This Product - Trusted energizer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Decade-Long Backup:** Holds power for up to 10 years in storage, making it the ultimate choice for smoke detectors and emergency gear. - • **Power That Outlasts:** Lasts up to 20% longer in toys than standard alkaline batteries, keeping your devices energized and ready. - • **Extreme Temperature Ready:** Reliable performance from freezing -40°F to scorching 140°F, perfect for any environment or season. - • **Leak-Resistant Durability:** Engineered with leak-resistant construction to protect your valuable devices and ensure safety. - • **Lightweight & Long-Lasting:** 25% lighter than alkaline batteries, reducing device weight without compromising power. ## Overview Energizer Ultimate Lithium 9V Battery delivers up to 20% longer life in toys, operates reliably in extreme temperatures (-40°F to 140°F), and features leak-resistant design. Weighing 25% less than alkaline batteries, it offers a 10-year shelf life, making it ideal for smoke detectors, toys, and critical devices requiring dependable, long-lasting power. ## Description Nothing outlasts Energizer Ultimate Lithium 9V Batteries. These Energizer batteries last up to 20 percent longer in toys versus Energizer MAX batteries, and they feature leak resistant construction and performance in extreme temperatures ranging from -40 F to 140 F. Use these 9 volt lithium batteries to power toys and games, or use them to provide up to 10 year battery backup in AC powered smoke detectors. Energizer 9 volt Ultimate Lithium batteries weigh 25 percent less than standard alkaline batteries. They also hold power for up to 10 years in storage, letting you keep a ready supply of backup 9 volt batteries. To ensure your favorite devices operate at their peak performance, depend on Energizer lithium batteries for work, play and home. ## Features - 1 pack of Energizer Ultimate Lithium 9V Batteries - Lasts up to 20 percent longer in toys versus Energizer MAX batteries - Performance in extreme temperatures from -40 F to 140 F ensures reliable use in all seasons - Long lasting batteries have leak-resistant construction - Lightweight 9 volt batteries last up to 10 years in storage - Ideal battery for toys and clocks, and long lasting smoke detector battery ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B018N7YZL6 | | Amperage | 1 Amps | | Antenna Location | Radio | | Battery Capacity | 9 Volts | | Battery Cell Type | Lithium Metal | | Battery Weight | 250 Grams | | Best Sellers Rank | 5,771 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 611 in Disposable Household Batteries | | Box Contents | Battery Pack | | Brand Name | Energizer | | Compatible Phone Models | smoke detectors, remote control cars, toys, games | | Country of Origin | United Kingdom | | Customer Reviews | 4.7 4.7 out of 5 stars (2,273) | | Global Trade Identification Number | 00039800911568 | | Item Dimensions | 32 x 13 x 19 millimetres | | Item Type Name | 9v-batteries | | Item Weight | 36 g | | Manufacturer | Energizer | | Model Name | ENR L522BP.H4 LITH 9V-1 EMOD | | Model Number | L522BP | | Number of Batteries | 1 AAA batteries required. (included) | | Reusability | Single Use | | UPC | 039800911568 | | Unit Count | 1.0 Count | | Voltage | 9 Volts | ## Product Details - **Battery capacity:** 9 Volts - **Battery cell composition:** Lithium Metal - **Brand:** Energizer - **Number of batteries:** 1 AAA batteries required. (included) - **Recommended uses for product:** Radio ## Images ![Energizer Ultimate Lithium 9V Batteries (1 Pack), Lithium 9 Volt Batteries - Image 1](https://m.media-amazon.com/images/I/71oul0XReoL.jpg) ## Questions & Answers **Q: what is the mah?** A: 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. **Q: are these l522bp-2 the same as advance lithium l522 ?** A: 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. **Q: Life span in smoke alarms?** A: Lasted only 1 year 5 months in my smoke detector. **Q: Is there any chance of these batteries used in a smoke detector exploding and causing a fire?** A: 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 23 March 2026* ### ⭐⭐⭐ Review *by J***D on 9 January 2026* ### ⭐⭐⭐⭐⭐ Review *by D***N on 6 February 2023* ## Frequently Bought Together - Energizer Ultimate Lithium 9V Batteries (1 Pack), Lithium 9 Volt Batteries - Energizer Ultimate Lithium AA Batteries Pack, 1.5V AA Batteries, 24 Count - Energizer AA Batteries, Ultimate Lithium Double A Battery, 8 Count --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/316513149-energizer-ultimate-lithium-9v-batteries-1-pack-lithium-9-volt](https://www.desertcart.co.uk/products/316513149-energizer-ultimate-lithium-9v-batteries-1-pack-lithium-9-volt) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-15*