--- product_id: 459368354 title: "6PCS 2S 7.4V 8.4V 8A 18650 Battery Protection Board PCB BMS Protection Module for Li-ion Lithium Battery Cell" brand: "daier" price: "B/.29" currency: PAB in_stock: true category: "Daier" url: https://www.desertcart.com.pa/products/459368354-6pcs-2s-7-4v-8-4v-8a-18650-battery-protection store_origin: PA region: Panama --- # 8A max continuous current Supports 2S 7.4V/8.4V Li-ion packs 4-layer multi-protection system 6PCS 2S 7.4V 8.4V 8A 18650 Battery Protection Board PCB BMS Protection Module for Li-ion Lithium Battery Cell **Brand:** daier **Price:** B/.29 **Availability:** ✅ In Stock ## Summary > 🛠️ Power your projects with precision and protection — because your batteries deserve the best! ## Quick Answers - **What is this?** 6PCS 2S 7.4V 8.4V 8A 18650 Battery Protection Board PCB BMS Protection Module for Li-ion Lithium Battery Cell by daier - **How much does it cost?** B/.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/459368354-6pcs-2s-7-4v-8-4v-8a-18650-battery-protection) ## Best For - daier enthusiasts ## Why This Product - Trusted daier brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Efficient:** Slim 41x8x2.2mm PCB fits seamlessly into your battery packs without bulk. - • **Quadruple Safety Shield:** Overcharge, over-discharge, overcurrent, and short circuit protections keep your devices safe 24/7. - • **Universal Compatibility:** Designed for various 3.7V lithium battery shapes and capacities—flexibility meets power. - • **Power-Packed Performance:** Handles up to 8A continuous and 16A instantaneous current for reliable energy flow. - • **Wiring Precision Required:** Strict adherence to wiring diagram ensures optimal performance and chip longevity—don’t risk it! ## Overview This 6-pack of 2S 7.4V/8.4V 8A Battery Protection Boards offers robust multi-layer safety features including overcharge, over-discharge, overcurrent, and short circuit protection. Engineered for 3.7V lithium-ion cells, it supports up to 16A instantaneous current and requires precise wiring for optimal performance. Compact and versatile, it’s ideal for DIY battery packs, solar lights, and backup power solutions. ## Description Specifications: Charging Voltage: 8.4V Overcharge Voltage Range: 4.28V plus or minus 0.05V Overpressure Voltage Range: 2.3V-2.9V plus or minus 0.05V Upper Limit Operating Current: 8A Upper Limit Instantaneous Current: 16A Quiescent Current: less than 30uA Size: 41mm x 8mm x 2.2mm/ 1.61″ ×0.31″×0.09″(L x W x H) Overcharge protection, over discharge protection, short circuit protection, overcurrent protection. Welding Point Description: B + battery anode; B - connect battery negative terminal; MMB connect battery 1 to battery 2; P + charging/discharge correct poles (charging end/discharge end sharing); P - charging/discharge terminal negative terminal (charging end/discharge end sharing). Wiring: B+ : Connect to battery positive. B- : Connect to battery negative. MB: Connection point between battery 1 and battery 2. P+: Positive pole for charging/discharging (common at charging/discharging end). P- : Negative pole for charging/discharging end (common at charging/discharging end). Attention: Strictly according to the diagram wiring: B+: Battery V+ Positive, B-: Battery V- Negative, P+: Output / Charging V+, P-: Output / Charging V-, MB: The connection point between the batteries.Otherwise it will cause damage to the chip. Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. Tips: the product must be connected to a 8.4V charging voltage through p+ and p- before it will create voltage on pads.Or you can activate this BMS by momentarily shorting b- and p-. ## Features - Overcharging Range: 4.25 ± 0.05V to 4.35V; Over Voltage Range: 2.3 ± 0.05V to 3.0V; Maximum working current: 8A; Maximum instantaneous current: 16A. - Useful: Use for variety of capacities and various shapes 3.7V lithium batteries,Massager battery pack, LED light backup power supply, solar street light battery pack, monitor standby power supply, etc. - MULTIPLE PROTECTION: Over-discharge protection, overcurrent protection, overcharge protection, short circuit protection; A combination of 4 safety features that work together to provide ultimate protection for your devices. - ATTENTION: Strictly according to the diagram wiring: B+: Battery V+ Positive, B-: Battery V- Negative, P+: Output / Charging V+, P-: Output / Charging V-, MB: The connection point between the batteries.Otherwise it will cause damage to the chip. Do not mix the good battery and poor battery to use. The internal resistance of 3 battery capacity are closer will be better. - Package Includes:10PCS 2S 7.4V 8.4V 8A Lithium Battery Protection Board. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09WN3GGM8 | | Best Sellers Rank | #993,314 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #4,478 in Power Converters | | Brand | daier | | Color | blue | | Customer Reviews | 4.4 4.4 out of 5 stars (12) | | Input Voltage | 8.4 volts | | Item Weight | 0.01 kg | | Manufacturer | daier | | Mfr Part Number | E1269 | | Model Number | E1269 | | Number of Items | 6 | | Number of Packs | 10 | | Output Voltage | 8.4 volts_of_direct_current | | Plug Type | Micro USB | | Power Source | rechargeable battery | | Unit Count | 6 | | Warranty Description | Strictly according to the diagram wiring;Do not mix the good battery and poor battery to use. | ## Product Details - **Brand:** daier - **Color:** blue - **Input Voltage:** 8.4 volts - **Item Weight:** 0.01 kg - **Output Voltage:** 8.4 volts_of_direct_current ## Images ![6PCS 2S 7.4V 8.4V 8A 18650 Battery Protection Board PCB BMS Protection Module for Li-ion Lithium Battery Cell - Image 1](https://m.media-amazon.com/images/I/81a063MN4BL.jpg) ## Frequently Bought Together - daier 6PCS 2S 7.4V 8.4V 8A 18650 Battery Protection Board PCB BMS Protection Module for Li-ion Lithium Battery Cell - Comidox 3S 12V 10A 18650 Lithium Battery Protection Board BMS Li-ion Charger Protection Module Anti-Overcharge/Over-Discharge/Over-Current/Short Circuit 3Pcs - Dorhea MT3608 DC-DC Step Up Boost Power Converter 2A Module Adjustable Step Up Voltage Regulator Board Voltage 2-24V to 5V-28V Output Voltage Mico USB Compatible with Ardu ino (Pack of 10) --- ## 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.com.pa/products/459368354-6pcs-2s-7-4v-8-4v-8a-18650-battery-protection](https://www.desertcart.com.pa/products/459368354-6pcs-2s-7-4v-8-4v-8a-18650-battery-protection) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-15*