{"product_id":"lithium-battery-charging-and-protection-integrated-board-5v-1000ma-4-2v-cut-off-2-5v-over-discharge-3a-overcurrent-protection-2-6x1-7cm-blue-pcb","title":"Lithium Battery Charging and Protection Integrated Board 5V 1000mA 4.2V Cut-Off 2.5V Over-Discharge 3A Overcurrent Protection 2.6x1.7cm Blue PCB","description":"\u003ch1\u003eLithium Battery Charging and Protection Integrated Board 5V 1000mA 4.2V Cut-Off\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue lithium battery charging and protection integrated board 2.6x1.7cm with 5V input and protection circuitry\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/29\/2025-09-28\/original-image\/1147638285863.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis single-board module combines lithium battery charging and protection circuits into one compact unit, saving space and simplifying wiring in DIY electronics projects, battery packs, and repair work. Accepting a standard 5V input, it delivers up to 1000mA charging current with a precise 4.2V cut-off voltage. Protection features include over-discharge cutoff at 2.5V and overcurrent protection at 3A, helping to maintain battery health and prevent damage from common fault conditions. At just 2.6 x 1.7 cm, the blue PCB fits comfortably in small enclosures or custom builds.\u003c\/p\u003e\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue lithium battery charging and protection integrated board 2.6x1.7cm with 5V input and protection circuitry\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/29\/2025-09-28\/original-image\/153334228791.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThe board integrates two essential functions for single-cell lithium battery management: a constant-current\/constant-voltage charger and a protection circuit. All components are mounted on a compact blue PCB.\u003c\/p\u003e\u003ch3\u003eCharging Circuit\u003c\/h3\u003e\u003cp\u003eThe charging section regulates input from a 5V supply to safely charge a single-cell lithium battery at up to 1000mA. Charge termination occurs at 4.2V ±1%, preventing overcharge and extending battery cycle life.\u003c\/p\u003e\u003ch3\u003eProtection Circuit\u003c\/h3\u003e\u003cp\u003eThe protection section monitors battery voltage and current. It disconnects the load when voltage drops to 2.5V (over-discharge protection) and limits current to 3A (overcurrent protection). These thresholds are fixed and not user-adjustable.\u003c\/p\u003e\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003e\u003cp\u003eWith dimensions of 2.6 x 1.7 cm, the board is small enough for portable projects, battery holders, or replacement in existing devices. Its compact layout reduces the need for separate charge and protection boards.\u003c\/p\u003e\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue lithium battery charging and protection integrated board 2.6x1.7cm with 5V input and protection circuitry\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/29\/2025-09-28\/original-image\/1759240881925.webp\"\u003e\u003c\/div\u003e\u003cp\u003eThis board is suitable for any application requiring safe charging and basic protection of a single-cell lithium battery, such as 3.7V Li-ion or LiPo cells. It is typically wired between a USB power source and the battery.\u003c\/p\u003e\u003ch3\u003eDIY and Hobby Projects\u003c\/h3\u003e\u003cp\u003eIdeal for hobbyists building custom battery packs, portable chargers, or microcontroller-powered devices that run on a single lithium cell. The integrated design simplifies assembly and troubleshooting.\u003c\/p\u003e\u003ch3\u003eReplacement and Repair\u003c\/h3\u003e\u003cp\u003eCommonly used as a replacement board in devices where the original charging or protection circuit has failed. Its standard 5V input makes it compatible with many USB-powered gadgets.\u003c\/p\u003e\u003ch3\u003eBattery Pack Integration\u003c\/h3\u003e\u003cp\u003eCan be integrated into custom battery pack enclosures, providing both charging and protection in a single footprint. This reduces wiring and potential failure points compared to using separate modules.\u003c\/p\u003e\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Blue lithium battery charging and protection integrated board 2.6x1.7cm with 5V input and protection circuitry\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US14\/29\/2025-09-28\/original-image\/34161336961108.webp\"\u003e\u003c\/div\u003e\u003cp\u003eChoosing this integrated board offers practical benefits for electronics work, particularly in space-constrained or cost-conscious builds.\u003c\/p\u003e\u003ch3\u003eSpace and Cost Efficiency\u003c\/h3\u003e\u003cp\u003eCombining two functions on one board reduces component count, saves physical space, and can lower overall project cost compared to buying separate charge and protection modules.\u003c\/p\u003e\u003ch3\u003eSimplified Wiring\u003c\/h3\u003e\u003cp\u003eWith only input and battery terminals, the board minimises wiring errors. This is especially useful for beginners or for projects where reliability is important.\u003c\/p\u003e\u003ch3\u003eConsistent Performance\u003c\/h3\u003e\u003cp\u003eFactory-set thresholds for charge cut-off, over-discharge, and overcurrent provide repeatable performance without user calibration, ensuring consistent battery management across multiple units.\u003c\/p\u003e","brand":"test8881lbos3w2ur","offers":[{"title":"Blue","offer_id":55453447586131,"sku":"CJJSCCYD00044-Blue","price":5.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1112\/5551\/9571\/files\/153334228791.webp?v=1792193561","url":"https:\/\/elmworth.co.uk\/products\/lithium-battery-charging-and-protection-integrated-board-5v-1000ma-4-2v-cut-off-2-5v-over-discharge-3a-overcurrent-protection-2-6x1-7cm-blue-pcb","provider":"Elmworth.co.uk","version":"1.0","type":"link"}