--- product_id: 593243710 title: "4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440" price: "£1.48" currency: GBP in_stock: false reviews_count: 8 url: https://www.desertcart.co.uk/products/593243710-4-pack-1-8-6-5-0-rechargeable-batter-y store_origin: GB region: United Kingdom --- # 4 independent charging bays 9900mAh powerhouse Universal USB 5V input 4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 **Price:** £1.48 **Availability:** ❌ Out of Stock ## Summary > 🔋 Power up your hustle with smart, safe, and versatile charging! ## Quick Answers - **What is this?** 4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - **How much does it cost?** £1.48 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/593243710-4-pack-1-8-6-5-0-rechargeable-batter-y) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power That Lasts:** High-capacity 9900mAh 18650 batteries keep your devices running longer, so you never miss a moment. - • **Built-In Safety First:** Advanced protections guard against reverse polarity, short circuits, overcharge, and overcurrent—keeping you and your batteries safe. - • **Versatile Compatibility:** Supports multiple battery sizes (18650, 26650, 14500, 10440) to power all your essential gadgets seamlessly. - • **Charge Smarter, Not Harder:** Four intelligent slots with individual charging and LED indicators ensure efficient, safe charging every time. - • **Travel-Ready USB Convenience:** Universal 5V USB input lets you recharge anywhere—from your laptop to a power bank—perfect for the on-the-go professional. ## Overview This 4-slot smart charger with universal USB input efficiently charges multiple lithium-ion batteries including 18650, 26650, and smaller sizes. Featuring 9900mAh rechargeable batteries, individual LED indicators, and comprehensive safety protections, it’s designed for professionals who demand reliable power on the go. ## Description Review: Powerful, High Amperage, and Consistent Construction - To my pleasant surprise, all four of these arrived at a fully charged 3.87 volts ... typical for a new 3.7 volt battery! With my TrustFire Flashlight, it 'brilliantly' Exceeds Expectations. As for my little 3.7 volt mini-fan, oops! Unfortunately, I blundered ... not the battery ... by not reading its maximum rated current ... 5000 mAh! NOT 9900 mAh!. After a few seconds ... again to NO fault of the battery ... the motor quit. Lesson-for-Dummies: *Always read the labeled amperage and voltage ratings of the device the battery will power!! (Same caveat applies to the battery charger.) Overall the batteries exceeded my expectations ... five stars! Review: Works Great - Bought for my dad& his old flashlight as x-mas gift! he really likes his old very bright light! he was impressed by the 4 batteries! He said I only need one! Now he has extras to rotate so he's never with out a working flashlight to see in the dark! ## Technical Specifications | Specification | Value | |---------------|-------| | Item Weight | 0.28 Kilograms | | Item Dimensions D x W x H | 4.92"D x 3.74"W x 1.38"H | | Input Voltage | 5 Volts | ## Product Details - **Brand:** Generic - **Product Dimensions:** 1.37"D x 3.85"W x 5.5"H - **Item Weight:** 0.28 Kilograms - **Output Voltage:** 3.7 Volts - **Input Voltage:** 5 Volts ## Images ![4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Image 1](https://m.media-amazon.com/images/I/41wYr9srySL.jpg) ![4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Image 2](https://m.media-amazon.com/images/I/51modIh6UKL.jpg) ![4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Image 3](https://m.media-amazon.com/images/I/51RwyLU3RVL.jpg) ![4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Image 4](https://m.media-amazon.com/images/I/51P5g265TPL.jpg) ![4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Image 5](https://m.media-amazon.com/images/I/41vwLTJYiqL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Powerful, High Amperage, and Consistent Construction *by J***H on August 24, 2024* To my pleasant surprise, all four of these arrived at a fully charged 3.87 volts ... typical for a new 3.7 volt battery! With my TrustFire Flashlight, it 'brilliantly' Exceeds Expectations. As for my little 3.7 volt mini-fan, oops! Unfortunately, I blundered ... not the battery ... by not reading its maximum rated current ... 5000 mAh! NOT 9900 mAh!. After a few seconds ... again to NO fault of the battery ... the motor quit. Lesson-for-Dummies: *Always read the labeled amperage and voltage ratings of the device the battery will power!! (Same caveat applies to the battery charger.) Overall the batteries exceeded my expectations ... five stars! ### ⭐⭐⭐⭐⭐ Works Great *by A***R on February 2, 2025* Bought for my dad& his old flashlight as x-mas gift! he really likes his old very bright light! he was impressed by the 4 batteries! He said I only need one! Now he has extras to rotate so he's never with out a working flashlight to see in the dark! ### ⭐⭐⭐⭐ Recharge via usb, but capacity? *by R***T on March 29, 2025* I like the usb charger, the batteries work, but I found they do not last longer than the 1500mAH batteries they were to replace. So I think the 9900mAH capacity is either incorrectly calculated or an exaggeration, you decide. Gave 4 stars because expected them to last longer with bigger gas tank, but they do not. ## Frequently Bought Together - 4 Pack 1￵8￵6￵5￵0 Rechargeable Batter￵y 9900m￵A￵h W￵i￵th 18650 Battery Charger,Universal Smart Charger for 3.7V Rechargeable Battery 21700 14500 10440 - Victoper LED Flashlight 2 Pack, Bright Tactical Torch High Lumens with 5 Modes, Waterproof Zoomable Flash Light for Outdoor, Gifts for Camping Essentials Gear --- ## 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.co.uk/products/593243710-4-pack-1-8-6-5-0-rechargeable-batter-y](https://www.desertcart.co.uk/products/593243710-4-pack-1-8-6-5-0-rechargeable-batter-y) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-26*