--- product_id: 12291104 title: "Hawker/Cyclon/Enersys 0819-0020 Battery | 12v 2.5Ah Emergency Light..." brand: "hawker enersys" price: "€ 168.15" currency: EUR in_stock: true reviews_count: 8 category: "Hawker Enersys" url: https://www.desertcart.sk/products/12291104-hawker-cyclon-enersys-0819-0020-battery-12v-2-5ah-emergency store_origin: SK region: Slovakia --- # 2.5Ah High Capacity Compact 4.48x3.52x2.77 in 12V Pure Lead Power Hawker/Cyclon/Enersys 0819-0020 Battery | 12v 2.5Ah Emergency Light... **Brand:** hawker enersys **Price:** € 168.15 **Availability:** ✅ In Stock ## Summary > 🔋 Power that keeps you going—because your emergency light deserves the best! ## Quick Answers - **What is this?** Hawker/Cyclon/Enersys 0819-0020 Battery | 12v 2.5Ah Emergency Light... by hawker enersys - **How much does it cost?** € 168.15 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/12291104-hawker-cyclon-enersys-0819-0020-battery-12v-2-5ah-emergency) ## Best For - hawker enersys enthusiasts ## Why This Product - Trusted hawker enersys brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **High Power Density:** Maximize your energy dollar with superior high-rate charge and discharge performance. - • **Unmatched Longevity:** Engineered to deliver up to 14+ years of reliable power—outlasting typical batteries by nearly 3x. - • **Plug & Play Replacement:** Easy installation with standard 0.187" F1 Faston tabs and compact monobloc design. - • **Pure Lead Acid Chemistry:** Industry-leading deep discharge resilience and rugged durability for extreme conditions. - • **Trusted Legacy Since 1973:** Backed by decades of proven reliability from the iconic Hawker/Cyclon/Enersys lineage. ## Overview The Hawker/Cyclon/Enersys 0819-0020 is a 12V, 2.5Ah pure lead acid battery designed primarily for emergency lighting. Compact and rugged, it offers exceptional deep discharge performance and a long service life exceeding 14 years in real-world use. Featuring easy installation with standard connectors and backed by a full manufacturer warranty, this battery is a trusted replacement choice for professionals seeking reliable, high-density power solutions. ## Description This is a Hawker/Cyclon/Enersys 0819-0020 battery widely used in emergency lights. The Hawker/Cyclon/Enersys 0819-0020 12 volt 2.5 Ah Pure Lead battery is a popular replacement battery in many emergency lighting unitsy --- BatteryGuy Supplies Enersys Cyclon, the most reliable Pure Lead Acid Battery in the Industry. Enersys Cyclon has Been Around Since its Inseption in 1973 and has Been Through Several Different Name Changes Since Then. Enersys Cyclon Was Known as Gates Battery and Hawker Battery in the Not so Distant Past. Enersys Cyclon Pure Lead Batteries are Known for their Superior Deep Discharge, Maintaining their Performance in Extreme Conditions, Long Service Life, Rugged Construction as Well as their High Rate Charge and Discharge. The Enersys Cyclon Battery Offers the Greatest High-Rate Power Density for Your Energy Dollar. Chemistry: Pure Lead Acid Dimension: 4.48" L x 3.52" W x 2.77" H Configuration: 2 x 3 D Cells in Two Even Horizontal Rows Housing Type: Monobloc Connector Type: 0.187" F1 Faston Tabs Review: Best Bang For The Buck - It is now 14 years after I bought my Lawnboy mower with electric start. I need to replace the original battery. These mowers came with a Hawker Energy Products battery, (now Enersys (Hawker) Cyclone). These batteries are in a word unbelievable. It's not often I find a product that not only does what it states but exceeds that by 40%. I am speaking of the length of service you can expect from this battery. . The manufacture of these batteries says they have a 10 year life expectancy. Mine has lasted for 14 years and that is 14 years of neglect and misuse. Instead of doing the required fall & spring charging, I simply put the mower away and next spring charge the battery overnight (not the recommended 48 or 72 hour charge). In fact several different years if the mower started without out charging or with 1 or two pulls on the recoil starter rope I would never charge it at all. Then the only charging it got was from the mower's charging system. Now accountants will say 'you should buy a cheaper 4-5 year battery and plan on replacing it every 4- 5 years. Well, I consider the time and trouble of finding and replacing a battery to be worth the extra cost. (A sealed lead acid battery runs about $18.00-24.00 if you look around here on desertcart). As you can see since you found this listing the Cyclon runs $35. Look carefully,I have found them elsewhere on the web selling for $174.00. But I digress. Bottom line is they are easy to replace even if you aren't terribly good with tools (it takes unscrewing 2 easy to get to small hex head screws) and unplugging one plug that is in the open and easy to see. Pop out the old battery and slip in the new. Replace the screws, plug in the plug and you are back to mowing. You may have to give it a 72 hour charge with your charger that came with the mower to bring it up to full power. At any rate you won't have to do much for the next 14 years. Heck, at my age I may never need to buy another battery for the mower! Review: Replacement Battery - Too large to fit in the space I needed it to fit but still was able to use it. ## Features - Brand New - Full Manufacturer Warranty - Dimensions: 4.48"L x 3.52"W x 2.77"H - 12 Volts - 2.5 ah ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00HXCR0P6 | | Amperage | 2.5 A | | Battery Capacity | 2.5 amp_hours | | Battery Cell Composition | Lead Acid | | Battery Cell Type | Lead Acid | | Best Sellers Rank | #298,171 in Health & Household ( See Top 100 in Health & Household ) #1,253 in 12V Batteries | | Brand | Hawker Enersys | | Customer Reviews | 3.8 out of 5 stars 25 Reviews | | Item Dimensions | 2.77 x 4.48 x 3.52 inches | | Item Weight | 2.3 pounds | | Manufacturer | Hawker Enersys | | Model Number | 0819-0020 | | Reusability | Rechargeable | | Unit Count | 1 Count | | Voltage | 12 volts | ## Product Details - **Battery Capacity:** 2.5 amp_hours - **Battery Cell Composition:** Lead Acid - **Brand:** Hawker Enersys - **Unit Count:** 1 Count - **Voltage:** 12 volts ## Images ![Hawker/Cyclon/Enersys 0819-0020 Battery | 12v 2.5Ah Emergency Light... - Image 1](https://m.media-amazon.com/images/I/51e+0CJQBBL.jpg) ## Questions & Answers **Q: May I know how many you have in stock? I need 26 units.** A: We have 22 in stock currently; this changes daily as our stock is on real time. **Q: Its One pack of Batteries or two?** A: It's a 12volt battery and each cell produces 2v, so there are 6 cells connected together. 6 x 2 = 12 **Q: Does it come with the Lawnboy connection already installed?** A: Comes with spade connection, as show on the picture **Q: Can the orientation be changed from what is in the picture? My terminals are not oriented that way.** A: I don’t believe so. I recall that they are male spade terminals coming off the side of the batteries. Molded in. The female connectors slide on. I would be sure the size will work, then make some extension wires if needed to reach the battery post. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Bang For The Buck *by &***; on June 14, 2014* It is now 14 years after I bought my Lawnboy mower with electric start. I need to replace the original battery. These mowers came with a Hawker Energy Products battery, (now Enersys (Hawker) Cyclone). These batteries are in a word unbelievable. It's not often I find a product that not only does what it states but exceeds that by 40%. I am speaking of the length of service you can expect from this battery. . The manufacture of these batteries says they have a 10 year life expectancy. Mine has lasted for 14 years and that is 14 years of neglect and misuse. Instead of doing the required fall & spring charging, I simply put the mower away and next spring charge the battery overnight (not the recommended 48 or 72 hour charge). In fact several different years if the mower started without out charging or with 1 or two pulls on the recoil starter rope I would never charge it at all. Then the only charging it got was from the mower's charging system. Now accountants will say 'you should buy a cheaper 4-5 year battery and plan on replacing it every 4- 5 years. Well, I consider the time and trouble of finding and replacing a battery to be worth the extra cost. (A sealed lead acid battery runs about $18.00-24.00 if you look around here on amazon). As you can see since you found this listing the Cyclon runs $35. Look carefully,I have found them elsewhere on the web selling for $174.00. But I digress. Bottom line is they are easy to replace even if you aren't terribly good with tools (it takes unscrewing 2 easy to get to small hex head screws) and unplugging one plug that is in the open and easy to see. Pop out the old battery and slip in the new. Replace the screws, plug in the plug and you are back to mowing. You may have to give it a 72 hour charge with your charger that came with the mower to bring it up to full power. At any rate you won't have to do much for the next 14 years. Heck, at my age I may never need to buy another battery for the mower! ### ⭐⭐⭐ Replacement Battery *by T***. on March 29, 2025* Too large to fit in the space I needed it to fit but still was able to use it. ### ⭐⭐⭐⭐⭐ Worked great. DR started right up after the installation *by R***S on September 5, 2016* Battery was a replacement for one in a 1998 DR Trimmer/Mower TRO Pro. Worked great. DR started right up after the installation. ## Frequently Bought Together - Hawker/Cyclon/Enersys 0819-0020 Battery | 12v 2.5Ah Emergency Light... - Genuine OEM Honda (HRX2173HYA) (HRX2173HZA) (HRX2173VKA) Walk-Behind Lawn Mower Engines Carburetor Assembly & MOUNTING GASKETS KIT - Honda HRX217 Series Tune-Up Kit (Serial Range MAGA-1000001 to MAGA-2199999) --- ## 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.sk/products/12291104-hawker-cyclon-enersys-0819-0020-battery-12v-2-5ah-emergency](https://www.desertcart.sk/products/12291104-hawker-cyclon-enersys-0819-0020-battery-12v-2-5ah-emergency) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-10-19*