--- product_id: 321991747 title: "Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm" brand: "lifebuoy" price: "€ 34.73" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.hr/products/321991747-lifebuoy-genuine-9v-battery-1200mah-lithium-er9v-batteries-pool-safety store_origin: HR region: Croatia --- # <1% annual self-discharge Waterproof for pool safety 1200mAh high capacity Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm **Brand:** lifebuoy **Price:** € 34.73 **Availability:** ✅ In Stock ## Summary > 🔋 Power your peace of mind with Lifebuoy’s long-lasting 9V lithium battery! ## Quick Answers - **What is this?** Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm by lifebuoy - **How much does it cost?** € 34.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/321991747-lifebuoy-genuine-9v-battery-1200mah-lithium-er9v-batteries-pool-safety) ## Best For - lifebuoy enthusiasts ## Why This Product - Trusted lifebuoy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power that lasts:** 1200mAh lithium capacity ensures long-lasting energy for your pool safety alarm and more. - • **Stay ready, always:** Ultra-low self-discharge rate (<1% per year) means your battery stays fresh and reliable when you need it most. - • **Compact & lightweight:** Slim 48.8×17.8×27.5mm design at just over an ounce, easy to install without bulk. - • **Pool-proof performance:** Designed to withstand moisture, perfect for Lifebuoy Pool Safety Alarms and other 9V devices. - • **Universal compatibility:** Fits any device requiring ER9V 9V lithium batteries—versatility meets convenience. ## Overview The Lifebuoy Genuine 9V ER9V lithium battery delivers a robust 1200mAh capacity with an impressively low self-discharge rate of less than 1% per year, ensuring dependable power for pool safety alarms and other 9V devices. Its waterproof design and compact size make it ideal for both pool and home safety units, providing reliable, long-lasting energy where it matters most. ## Description Buy Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm: 9V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Great waterproof battery - This battery is required in my pool alarm, I needed a 9 volt waterproof battery and this fit. I used this before and got a year out of the last one. Great price. Review: Do not buy - This thing lasted three months. That is not a long lasting battery. It is way too expensive for what it is, which is just a regular battery. ## Features - Model:ER 9V 1200mAH Lithium Battery Non-Rechargeable - Compatiable with Lifebuoy Pool Safety Alarm for both Pool Unit and Home Unit - Diameter:48.8×17.8×27.5mm - Low self-discharge rate (less than 1% per year at 25°C). - Can be used with any other products required this battery specification ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B095CF61YV | | Batteries | 1 9V batteries required. | | Best Sellers Rank | #640,544 in Health & Household ( See Top 100 in Health & Household ) #421 in 9V Batteries | | Customer Reviews | 3.4 3.4 out of 5 stars (42) | | Date First Available | May 19, 2021 | | Item Weight | 1.06 ounces | | Item model number | ER9V | | Manufacturer | PK Cell | | Product Dimensions | 1.77 x 0.71 x 1.06 inches | ## Product Details - **Battery Capacity:** 1200 Milliampere Hour (mAh) - **Battery Cell Composition:** Lithium Metal - **Brand:** Lifebuoy - **Number of Batteries:** 1 9V batteries required. - **Recommended Uses For Product:** lifebuoy pool alarm ## Images ![Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm - Image 1](https://m.media-amazon.com/images/I/61EojN5pTTL.jpg) ![Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm - Image 2](https://m.media-amazon.com/images/I/61Nz3xLxmKL.jpg) ![Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm - Image 3](https://m.media-amazon.com/images/I/61s5Ww1z0YL.jpg) ![Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm - Image 4](https://m.media-amazon.com/images/I/718Ir22uKTL.jpg) ![Lifebuoy Genuine 9V Battery 1200mAh Lithium ER9V Batteries Pool Safety Alarm - Image 5](https://m.media-amazon.com/images/I/71J+g0KHehL.jpg) ## Questions & Answers **Q: How do I test that the alarm is correctly triggered?** A: Turn on the alarm and wait 20 seconds. Use a 4 gallon jug of water or 3-one gallon jugs tied together. Push it from the pool deck at the farthest location from the alarm. The alarm will sound a couple of seconds after the water action arrives to it. **Q: What if the test doesn't trigger an alarm?** A: Make sure to locate the pool unit at the center of the pool. Raise the sensitivity level (e.g from 3 to 4). If the pool is larger than 20’X40’, it is recommended to use two lifebuoy pool alarm or the newer BCone system with 2 pool units. **Q: Will it work with an automatic cleaner, water features or a pool cover?** A: Automatic cleaners and water features may cause false alarms. With small waterfalls System can perform well if pool unit is installed far from the waterfall and sensitivity is adjusted propperly. Lifebuoy will not work properly with solar cover. **Q: When should i replace the battery?** A: Home Unit battery lasts about 1 year and can be easily replaced with standard 9 volt battery. Pool Unit battery lasts up to 3 years and replaced by removing 4 screws, use only compatible 1200mAH Lithium ER9V battery by Lifebuoy or PKCell. **Q: What is the range of the system?** A: Pool unit can typically be 50’ from the home unit. Install the home unit on the nearest wall and avoid obstacles between both units to improve range. When using the app, smartphone should be within 10’ from the home unit to communicate properly. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great waterproof battery *by C***E on June 14, 2023* This battery is required in my pool alarm, I needed a 9 volt waterproof battery and this fit. I used this before and got a year out of the last one. Great price. ### ⭐ Do not buy *by A***L on May 12, 2024* This thing lasted three months. That is not a long lasting battery. It is way too expensive for what it is, which is just a regular battery. ### ⭐⭐⭐⭐ But how do we source 1.21 gigawatts, Doc? Marty, we use a Lithium 1200mAh 9V Battery! *by G***R on October 12, 2023* I have been slowly replacing my standard alkaline 9V batteries with higher capacity 9V batteries for my smoke detectors, motion lights, and laser targets. I needed another battery and decided to try this one because of the high mAh rating and slower discharge rate. Make sure you are aware that this is NOT a rechargeable battery. I was surprised by how lightweight this battery is. It is nearly one third less weight than my standard alkaline batteries at only 1-ounce. The dimensional size is also just a hair bigger both in width and height, but it was not enough of an issue when installing it in a motion activated light that has very tight tolerances. Despite the lightweight, this battery holds its charge for a far longer time than my standard equivalents, with six times the capacity having a 1200mAh (10800mWh) capacity. I am very pleased with the performance of this battery and will continue to use them in my motion activated lights and smoke detectors. Although significantly more expensive than a standard alkaline battery, it is because of how much longer this will last, both before use when stored, and when in use in an electronic device, so I consider this a decent value, if maybe a hair on the pricey side. ## Frequently Bought Together - Genuine 9V Battery 1200mAh Lithium ER9V Batteries for Lifebuoy Pool Safety Alarm - lifebuoy Pool Alarm System - Pool Motion Sensor with Advanced Algorithm - Smart Pool Alarm That is Application Controlled. Powerful Sirens Blare at Poolside and Indoors - Lifebuoy Genuine Replacement for Lifebuoy Pool Alarm - Pool Unit's Attachment Kit for Lifebuoy Pool Safety Alarm for Children and Pets, Anchor Your Floating Device to Poolside --- ## 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.hr/products/321991747-lifebuoy-genuine-9v-battery-1200mah-lithium-er9v-batteries-pool-safety](https://www.desertcart.hr/products/321991747-lifebuoy-genuine-9v-battery-1200mah-lithium-er9v-batteries-pool-safety) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-25*