--- product_id: 1365449 title: "Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack" brand: "tenergy" price: "57.69 DT" currency: TND in_stock: true reviews_count: 13 category: "Tenergy" url: https://www.desertcart.tn/products/1365449-tenergy-centura-9v-nimh-rechargeable-batteries-200mah-low-self-discharge store_origin: TN region: Tunisia --- # Retains 85% charge after 1 year 200mAh high-capacity power Rechargeable up to 2,100 cycles Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack **Brand:** tenergy **Price:** 57.69 DT **Availability:** ✅ In Stock ## Summary > ♻️ Power Up Smart, Save Big, Stay Safe 🔥 ## Quick Answers - **What is this?** Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack by tenergy - **How much does it cost?** 57.69 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/1365449-tenergy-centura-9v-nimh-rechargeable-batteries-200mah-low-self-discharge) ## Best For - tenergy enthusiasts ## Why This Product - Trusted tenergy brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power That Lasts:** Reliable 200mAh capacity keeps your smoke alarms and detectors running longer without constant replacements. - • **Precharged & Ready:** Out-of-the-box usability means no waiting—just install and protect your home immediately. - • **UL Certified Safety:** Backed by UL certification and a 12-month warranty for peace of mind in every charge. - • **Low Self-Discharge Tech:** Holds 85% of its charge even after a year of storage, so it’s ready when you need it most. - • **Eco-Smart Rechargeability:** Recharge up to 2,100 times—save money and reduce waste while staying powered up. ## Overview Tenergy Centura 9V NiMH rechargeable batteries deliver dependable 200mAh power with advanced low self-discharge technology, retaining 85% capacity after a year. Rechargeable up to 2,100 times, these UL-certified batteries are precharged and perfect for smoke alarms and detectors, offering a sustainable, cost-effective alternative to disposables. ## Description desertcart.com: Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack : Health & Household Review: Low Self-Discharge For The Win - I have a clock radio that uses a 9v battery for backup in case of power failures. When the power goes out the clock display shuts off to save power but the battery allows it to still keep time and if your alarm is set it will go off as usual. The clock has a low-battery warning light to let you know when to replace (or in my case recharge) the battery. I was using one of the first old style NiMH 9v batteries that was not low self-discharge that had a 150mah capacity and I think around 7.2v output. When it was fully charged and I put it into the clock radio it would take literally 3 or 4 seconds for the low battery light to come on. Obviously the battery didn't have a voltage above the threshold of the warning light so it came on immediately and stayed on. The battery did have enough power to run the clock if we lost power which was good, but it was annoying that I didn't have any way to know when the battery was drained. I found out through trial and error that the battery would only last about two or three months due to it self-discharging over that time. And that was without any power outages. So I went with this new low self-discharge 9V battery to see what would happen and couldn't be happier. It has a higher voltage so now the low battery light stays off (at least so far). I ordered these along with the Tenergy TN141 2 Bay 9V Smart Charger for NiMH 9V Rechargeable Batteries and gave the battery a quick charge to top it off before use. It has been about a month now and I just picked up the Delkin Devices DD/BATTEST MULTI RoHS AA/AAA Battery Power Tester and checked the charge level and it's still showing a full charge which is excellent, the old battery would have already been down to around 50% charge at this point. I will use the battery tester on it again when the low-battery light comes on, I may be able to use it for a while after the light comes on depending on it's charge level at that time. Over time as my other 9v alkaline batteries fail in my smoke detectors and other devices around the house I will definitely be replacing them with these. There really isn't any reason to stay with standard alkalines batteries over these new low self-discharge type of rechargeables anymore, with a few exceptions where rechargeables just aren't a good option for a particular device. But for the majority of our devices these are the way to go, saving us a lot of money over time. Using these batteries is most likely going to eliminate having to ever buy alkaline 9v batteries again since each one can be recharged up to 1000 times. That's a nice chunk of change saved right there. For each of these new 9 volts you bought you would be saving 1000 times the cost of a 9v alkaline, which even if they sold for only a dollar apiece you would save $1000! That's absolutely ridiculous. In a "I really like that" ridiculous kind of way! These modern low self-discharge NiHM batteries are another small but helpful innovation that makes our lives just that much easier. Highly recommended. *** Update Sunday, June 10, 2012 This discussion got me wondering, when using NiMH low self-discharge batteries, just how long would a smoke detector give you low battery warnings, until the batteries discharged completely and the warnings stopped? I had a Kidde NightHawk combination smoke/CO2 alarm that I could test with and like a lot of newer alarms it takes AA batteries, so I tested some Imedion AA low self-discharge NiHM batteries (three). I discharged the batteries until they were down to about 25% full, put them in and then had a long wait until I heard the first low battery warning. The alarm manual stated that using alkaline batteries the low battery warning would last at least seven days. I figured that the way these batteries discharge quicker than alkalines at the end of their life that the warning time would definitely be shorter than seven days, maybe around 2 to 5 days. However, what I found was the complete opposite! To my great surprise I actually ended up stopping the test myself before the batteries were completely exhausted. Why? Because the alarm gave me constant low battery warnings FOR THREE FULL WEEKS. I really didn't need to see just how much longer they were going to last past that. So apparently the low voltage cutoff point that triggers the warning was high enough that the NiHM LSD battery still has sufficient voltage to keep the warnings going for a long time, before it hits the steep (and quick) drop off point. So maybe a NiHM LSD 9V battery like this Tenergy might last longer than you would think as well, depending on the device used. Maybe we'll hear about how a 9V battery fares from someone in the future, either on desertcart or posted elsewhere. Review: Feels cheap in the hand, but very good battery - I bought my first of these a long while back. And I wasn't impressed initially. The battery felt light for a 9v, materials felt cheap. But happily a long while later, I've been pleasantly surprised. These rechargeable batteries hold a charge for a long time. I originally bought them for Rocksmith. I don't play the game much but had bought a cheap acoustic electric to do so. The pickup like most of them do require a 9v battery. I popped it in and even over a year later, the charge was good. I recently had an issue with a smoke detector. The 9v Duracell batteries I'd bought for them originally-- by the time I had to use them, they were long expired and like 3 years old. It didn't occur to me that they'd run out of juice before I even got a chance to use them. I pulled the battery from my guitar which hadn't been used but three or four times and was months... think like 18 months since I last recharged. They held the charge well enough that it's been over a week in my smoke detector and it's still not beeping low battery. I've long since charged a backup but it may be a long while before I have to swap them. I'll be using these as my replacement and backup 9v batteries from here on out. Even if they run down in between 3 or 4 year swaps, I can recharge them-- and I just don't believe they would take longer to drain than sitting inside the smoke alarm/detector. ## Features - Long lasting power - Tenergy's 2 pack Centura 9 volt battery for smoke alarms offers the. Generate energy savings by switching from standard single-use 9V size batteries to rechargeable batteries. - Low self-discharge - Centura 9 volt size battery is a low self-discharge 9V battery, which means it can retain up to 85% of capacity when properly stored and unused for up to a 1 year. - Extended cycle-life - Rechargeable up to 2,100 times without significant capacity lost. - Money saving eco-friendly - Tenergy rechargeable NiMH 9V battery pays for themselves after 10 cycles. Avoid wasting time and money on the disposable alkaline batteries and replace them with our rechargeable Centura Rechargeable 9V Battery to decrease the waste disposables leave behind. - Precharged ready-to-go - Use these rechargeable NiMH 9V batteries when first received, or fully recharge them for the best experience. These batteries are UL certified and include 12 months warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003QUNYQI | | Antenna Location | Camera | | Battery Capacity | 200 milliamp_hours | | Battery Cell Composition | NiMH | | Battery Cell Type | NiMH | | Battery Weight | 1.2 ounces | | Best Sellers Rank | #147,662 in Health & Household ( See Top 100 in Health & Household ) #111 in 9V Batteries | | Brand | Tenergy | | Customer Reviews | 4.5 out of 5 stars 1,501 Reviews | | Item Dimensions | 1.04 x 0.69 x 1.91 inches | | Item Weight | 34 g | | Manufacturer | Tenergy | | Model Name | Rechargeable batteries | | Model Number | 10002 | | Number of Batteries | 2 9V batteries required. | | Recommended Uses For Product | Camera | | Reusability | Rechargeable | | UPC | 844949002769 | | Unit Count | 2 Count | | Voltage | 8.4 volts | ## Product Details - **Battery Capacity:** 200 milliamp_hours - **Battery Cell Composition:** NiMH - **Brand:** Tenergy - **Number of Batteries:** 2 9V batteries required. - **Recommended Uses For Product:** Camera ## Images ![Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack - Image 1](https://m.media-amazon.com/images/I/71210u7bYeL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Low Self-Discharge For The Win *by W***E on January 12, 2012* I have a clock radio that uses a 9v battery for backup in case of power failures. When the power goes out the clock display shuts off to save power but the battery allows it to still keep time and if your alarm is set it will go off as usual. The clock has a low-battery warning light to let you know when to replace (or in my case recharge) the battery. I was using one of the first old style NiMH 9v batteries that was not low self-discharge that had a 150mah capacity and I think around 7.2v output. When it was fully charged and I put it into the clock radio it would take literally 3 or 4 seconds for the low battery light to come on. Obviously the battery didn't have a voltage above the threshold of the warning light so it came on immediately and stayed on. The battery did have enough power to run the clock if we lost power which was good, but it was annoying that I didn't have any way to know when the battery was drained. I found out through trial and error that the battery would only last about two or three months due to it self-discharging over that time. And that was without any power outages. So I went with this new low self-discharge 9V battery to see what would happen and couldn't be happier. It has a higher voltage so now the low battery light stays off (at least so far). I ordered these along with the Tenergy TN141 2 Bay 9V Smart Charger for NiMH 9V Rechargeable Batteries and gave the battery a quick charge to top it off before use. It has been about a month now and I just picked up the Delkin Devices DD/BATTEST MULTI RoHS AA/AAA Battery Power Tester and checked the charge level and it's still showing a full charge which is excellent, the old battery would have already been down to around 50% charge at this point. I will use the battery tester on it again when the low-battery light comes on, I may be able to use it for a while after the light comes on depending on it's charge level at that time. Over time as my other 9v alkaline batteries fail in my smoke detectors and other devices around the house I will definitely be replacing them with these. There really isn't any reason to stay with standard alkalines batteries over these new low self-discharge type of rechargeables anymore, with a few exceptions where rechargeables just aren't a good option for a particular device. But for the majority of our devices these are the way to go, saving us a lot of money over time. Using these batteries is most likely going to eliminate having to ever buy alkaline 9v batteries again since each one can be recharged up to 1000 times. That's a nice chunk of change saved right there. For each of these new 9 volts you bought you would be saving 1000 times the cost of a 9v alkaline, which even if they sold for only a dollar apiece you would save $1000! That's absolutely ridiculous. In a "I really like that" ridiculous kind of way! These modern low self-discharge NiHM batteries are another small but helpful innovation that makes our lives just that much easier. Highly recommended. *** Update Sunday, June 10, 2012 This discussion got me wondering, when using NiMH low self-discharge batteries, just how long would a smoke detector give you low battery warnings, until the batteries discharged completely and the warnings stopped? I had a Kidde NightHawk combination smoke/CO2 alarm that I could test with and like a lot of newer alarms it takes AA batteries, so I tested some Imedion AA low self-discharge NiHM batteries (three). I discharged the batteries until they were down to about 25% full, put them in and then had a long wait until I heard the first low battery warning. The alarm manual stated that using alkaline batteries the low battery warning would last at least seven days. I figured that the way these batteries discharge quicker than alkalines at the end of their life that the warning time would definitely be shorter than seven days, maybe around 2 to 5 days. However, what I found was the complete opposite! To my great surprise I actually ended up stopping the test myself before the batteries were completely exhausted. Why? Because the alarm gave me constant low battery warnings FOR THREE FULL WEEKS. I really didn't need to see just how much longer they were going to last past that. So apparently the low voltage cutoff point that triggers the warning was high enough that the NiHM LSD battery still has sufficient voltage to keep the warnings going for a long time, before it hits the steep (and quick) drop off point. So maybe a NiHM LSD 9V battery like this Tenergy might last longer than you would think as well, depending on the device used. Maybe we'll hear about how a 9V battery fares from someone in the future, either on Amazon or posted elsewhere. ### ⭐⭐⭐⭐⭐ Feels cheap in the hand, but very good battery *by J***O on March 20, 2022* I bought my first of these a long while back. And I wasn't impressed initially. The battery felt light for a 9v, materials felt cheap. But happily a long while later, I've been pleasantly surprised. These rechargeable batteries hold a charge for a long time. I originally bought them for Rocksmith. I don't play the game much but had bought a cheap acoustic electric to do so. The pickup like most of them do require a 9v battery. I popped it in and even over a year later, the charge was good. I recently had an issue with a smoke detector. The 9v Duracell batteries I'd bought for them originally-- by the time I had to use them, they were long expired and like 3 years old. It didn't occur to me that they'd run out of juice before I even got a chance to use them. I pulled the battery from my guitar which hadn't been used but three or four times and was months... think like 18 months since I last recharged. They held the charge well enough that it's been over a week in my smoke detector and it's still not beeping low battery. I've long since charged a backup but it may be a long while before I have to swap them. I'll be using these as my replacement and backup 9v batteries from here on out. Even if they run down in between 3 or 4 year swaps, I can recharge them-- and I just don't believe they would take longer to drain than sitting inside the smoke alarm/detector. ### ⭐⭐⭐⭐ Well-worth the price *by R***C on November 22, 2013* 9V batteries have long been the Achilles heel of rechargeables... but these seem to be a good match for most uses at a good price. They are about 8.4V instead of 9V proper, but should be close enough for nearly all devices, and may even maintain a working voltage LONGER than disposables. The current rating is also lower, but I've had several working just fine in my smoke detectors for months without trouble. At this price, they'll pay for themselves after less than 10 recharge cycles, and the hundreds of recharges after that is just free money... I got tired of hoping 9V batteries would just go away entirely, and the inconvenience of going out to buy new ones as soon as my smoke detectors started to beep. Having a few of these on hand is infinitely more convenient. The low self-discharge (LSD) means they'll work just fine in long, slow power drains like smoke detectors, where NiCDs or older conventional NiMH do a poor job. For higher-drain devices, Tenergy also sells Li-Ion 9V batteries with double the capacity around here. But these are the better choice for low-drain devices, and shouldn't be "bad" no matter how you use them. ## Frequently Bought Together - Tenergy Centura 9V NIMH Rechargeable Batteries, 200mAh Low Self-Discharge Square Battery for Smoke Alarm/Detector, 2 Pack - EBL Smart Rapid AA AAA Charger for AA AAA 9V Rechargeable Batteries Ni-MH Ni-CD Rechargeable Batteries - EBL Rechargeable AAA Batteries, 4-Pack Triple AAA Battery and AA AAA Battery Charger with Foldable AC Power Plug --- ## 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.tn/products/1365449-tenergy-centura-9v-nimh-rechargeable-batteries-200mah-low-self-discharge](https://www.desertcart.tn/products/1365449-tenergy-centura-9v-nimh-rechargeable-batteries-200mah-low-self-discharge) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-07*