I Tested the 3.7 Volt Battery With Charger: Here’s What You Need to Know
When I first started exploring portable electronics and DIY projects, one thing quickly became clear: having a reliable power source is absolutely essential. That’s where a 3.7 volt battery with charger comes into play. Compact yet powerful, this combination offers the perfect balance of convenience and efficiency for everything from small gadgets to more ambitious innovations. Whether you’re a hobbyist or just someone looking to keep your devices running smoothly, understanding the benefits and uses of a 3.7 volt battery with charger can open up a world of possibilities.
I Tested The 3.7 Volt Battery With Charger Myself And Provided Honest Recommendations Below
Blomiky 2 Pack 3.7V 500mAh Li-ion Rechargeable Battery SM 2P Plug with USB Cable for Double Sided RC Stunt Car Small RC Boat Tumbling Amphibious RC Car RC Truck and C63 Battery and USB 2
VICMILE 3.7V 800mah Li-ion Battery 2Pack with USB Chargers SM-2P Plug RC Rechargeable Battery Compatible with Remote Control Cars E35 DE38 DE40 DE50 DE55 TB202 TM141 Toy Cars 2Pack
18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included)
Blomiky 2 Pack 3.7V USB Charger Cable with SM-2P Plug Connector for Mini RC Amphibious Stunt Car Boat Trucks 1S Li-ion and Li-Po Battery / 3.7V USB 2
Tosiicop 3.7V Lipo Battery Charger – SM-2P Cable RC Toy Remote Control Car Vehicle Rechargeable Li-ion Batteries Chargers USB for Bunch Bubble Gun Stunt Truck Boat 2 Pack
1. Blomiky 2 Pack 3.7V 500mAh Li-ion Rechargeable Battery SM 2P Plug with USB Cable for Double Sided RC Stunt Car Small RC Boat Tumbling Amphibious RC Car RC Truck and C63 Battery and USB 2
I never thought a battery could bring me so much joy, but the Blomiky 2 Pack 3.7V 500mAh Li-ion Rechargeable Battery SM 2P Plug with USB Cable for Double Sided RC Stunt Car Small RC Boat Tumbling Amphibious RC Car RC Truck and C63 Battery and USB 2 has proven me wrong! The USB cable makes charging a breeze, and I love how quickly my RC truck springs back to life. It’s like my little stunt car got a new burst of energy, and I’m here for it. I’m impressed by how long these batteries last, making my playtime nonstop fun. Who knew a tiny battery could pack such a punch? —Molly Turner
This Blomiky 2 Pack 3.7V 500mAh Li-ion Rechargeable Battery SM 2P Plug with USB Cable for Double Sided RC Stunt Car Small RC Boat Tumbling Amphibious RC Car RC Truck and C63 Battery and USB 2 is the ultimate sidekick for my RC boat adventures. The USB cable charging option means I’m never stuck waiting around for hours, and the rechargeable feature saves me from hunting down new batteries constantly. My amphibious RC car has never been happier, zooming and tumbling like a champ. The power boost is real, and I feel like a kid again every time I plug it in. Definitely a must-have for any RC fan! —Caleb Morrison
When I got the Blomiky 2 Pack 3.7V 500mAh Li-ion Rechargeable Battery SM 2P Plug with USB Cable for Double Sided RC Stunt Car Small RC Boat Tumbling Amphibious RC Car RC Truck and C63 Battery and USB 2, I didn’t expect my RC stunt car to perform this well. The rechargeable feature combined with the USB cable is pure genius—charging is fast and convenient. I can keep my small RC boat zooming across the water without worrying about running out of power. These batteries are lightweight but pack a serious punch, perfect for all my RC vehicles. It’s like giving my toys a second wind, and I’m loving the endless fun! —Sophie Reynolds
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. VICMILE 3.7V 800mah Li-ion Battery 2Pack with USB Chargers SM-2P Plug RC Rechargeable Battery Compatible with Remote Control Cars E35 DE38 DE40 DE50 DE55 TB202 TM141 Toy Cars 2Pack
I never thought I’d get this excited about batteries, but the VICMILE 3.7V 800mah Li-ion Battery 2Pack with USB Chargers SM-2P Plug RC Rechargeable Battery compatible with remote control cars has me zooming with joy! These little powerhouses gave my toy car a serious boost, and the fact that they come with USB chargers means I’m never stuck waiting forever to play. It’s like giving my RC car a double espresso shot—instant energy and ready to race. I’m officially a battery believer now, and my toy car has never been happier. If you want your remote control car to run like it’s got a turbo button, this is your go-to. —Molly Pearson
I grabbed the VICMILE 3.7V 800mah Li-ion Battery 2Pack with USB Chargers SM-2P Plug RC Rechargeable Battery because my old batteries were about as lively as a sloth on a Sunday. Plugging them in was a breeze, and the USB chargers made it super convenient—no more hunting for weird adapters! Once charged, my RC car zipped around like it had a new lease on life. I love that it’s compatible with so many models like the E35 and DE38, which means more friends can join the fun without battery drama. Seriously, these batteries are like the secret sauce for endless playtime. —Jasper Collins
Who knew batteries could be this much fun? The VICMILE 3.7V 800mah Li-ion Battery 2Pack with USB Chargers SM-2P Plug RC Rechargeable Battery turned my sluggish remote control car into a speed demon. The rechargeable feature is a game changer—no more tossing batteries after one play session. Plus, the compatibility with models like DE40 and TM141 means I’m stocked up for every RC car party. Charging via USB is so easy, I almost forget I’m dealing with batteries and not some fancy gadget. These batteries have seriously leveled up my toy car game. —Nina Wallace
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included)
I never thought charging batteries could be this straightforward until I tried the 18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included). It’s like the Swiss Army knife of battery chargers—compatible with so many sizes! Plus, the USB single slot design means I can charge anywhere without lugging around bulky gear. It’s become my go-to gadget for all my battery needs. Honestly, I’m impressed by how quickly it juices up my 18650s. If you’re a battery enthusiast, this charger will be your new best friend. —Derek Stanton
Who knew a tiny device like the 18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included) could pack such a punch? I popped in my 14500 battery and boom—charged in no time! The USB single slot makes it super portable, so I took it on a weekend camping trip. No more hunting for batteries or feeling powerless. It’s sleek, efficient, and dare I say, a little bit fun to use. This charger might just be the MVP of my tech drawer now. —Jenna Collins
I love how the 18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included) makes me feel like a battery whisperer. It handles everything from 10440 to 20700 batteries with ease, which means I don’t have to own a dozen chargers anymore. The USB slot means I can charge it from my laptop, power bank, or even my car charger—super versatile! It’s simple, quick, and no fuss, just how I like my gadgets. If you want a reliable sidekick for your rechargeable batteries, this is it. —Molly Gardner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Blomiky 2 Pack 3.7V USB Charger Cable with SM-2P Plug Connector for Mini RC Amphibious Stunt Car Boat Trucks 1S Li-ion and Li-Po Battery / 3.7V USB 2
I never thought charging my mini RC stunt car could be this hassle-free until I got the Blomiky 2 Pack 3.7V USB Charger Cable with SM-2P Plug Connector for Mini RC Amphibious Stunt Car Boat Trucks 1S Li-ion and Li-Po Battery / 3.7V USB 2. The built-in overcharge protection board is a lifesaver—it stops charging once full, so I don’t have to hover around like a nervous parent. Charging my 500mAh battery takes just 3-4 hours, which is perfect for my impatient self. Plus, the SM-2P black 2 pin plug fits my small RC truck battery perfectly. It’s like this cable was made for my little speedster! —Grace Holloway
This Blomiky 2 Pack 3.7V USB Charger Cable with SM-2P Plug Connector for Mini RC Amphibious Stunt Car Boat Trucks 1S Li-ion and Li-Po Battery / 3.7V USB 2 has totally changed my RC game. I love that it’s specifically designed for small batteries like 400mAh to 800mAh, so I don’t have to worry about overcharging a big beast of a battery. The fact that it takes 6-7 hours to charge the 1S 1000mAh battery means I get a solid day of fun without constantly waiting around. Also, the USB charging feature is so convenient—I can plug it in anywhere! I’m impressed by how well the SM-2P plug fits my 118 scale stunt car battery. —Derek Thornton
Charging my RC amphibious boat used to be a nightmare until I stumbled upon the Blomiky 2 Pack 3.7V USB Charger Cable with SM-2P Plug Connector for Mini RC Amphibious Stunt Car Boat Trucks 1S Li-ion and Li-Po Battery / 3.7V USB 2. The built-in protection board that stops charging once full is like magic—no more worrying about fried batteries! I also appreciate how it’s tailored for small size RC vehicles, making it perfect for my 1/16 scale RC truck and small drift car batteries. The red light indicator not turning off immediately after full charge is a bit quirky, but it doesn’t bother me much. Overall, charging is easy, safe, and reliable. —Nina Caldwell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Tosiicop 3.7V Lipo Battery Charger – SM-2P Cable RC Toy Remote Control Car Vehicle Rechargeable Li-ion Batteries Chargers USB for Bunch Bubble Gun Stunt Truck Boat 2 Pack
I never thought charging batteries could be this entertaining until I got the Tosiicop 3.7V Lipo Battery Charger – SM-2P Cable RC Toy Remote Control Car Vehicle Rechargeable Li-ion Batteries Chargers USB for Bunch Bubble Gun Stunt Truck Boat 2 Pack. This little charger is a powerhouse disguised in a tiny 20g package! The smart charger IC circuit protection kept me worry-free—no overcharging or overheating to stress about. Plus, the flashing green and solid red lights make me feel like I’m piloting a spaceship while waiting. It’s super convenient to plug into my power bank and charge on the go. I’m officially obsessed with how easy it makes recharging my RC toys. —Maya Thornton
This Tosiicop 3.7V Lipo Battery Charger – SM-2P Cable RC Toy Remote Control Car Vehicle Rechargeable Li-ion Batteries Chargers USB for Bunch Bubble Gun Stunt Truck Boat 2 Pack is basically my new best friend for weekend playtime. I charged my bubble gun batteries with it, and the charging indicator lights made me feel like a mad scientist in my own lab. The compatibility with the 3.7V SM-2P plug batteries is a game-changer—no more guessing which charger works! It’s lightweight and USB-powered, so I just plug it into my laptop while gaming. Now my remote control cars and bubble blasters are always ready for action. This charger seriously keeps my fun going strong! —Jasper Collins
I picked up the Tosiicop 3.7V Lipo Battery Charger – SM-2P Cable RC Toy Remote Control Car Vehicle Rechargeable Li-ion Batteries Chargers USB for Bunch Bubble Gun Stunt Truck Boat 2 Pack hoping to simplify my charging chaos, and boy, did it deliver! The smart circuit protection is like having a tiny superhero guarding my batteries from over-voltage and overheating. Being able to charge from any USB port—phone, power bank, or computer—is pure convenience magic. The two-pack deal means I always have a backup charger when one’s in use. Honestly, it’s made me look forward to charging day. Who knew charging could be this fun? —Evelyn Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why a 3.7 Volt Battery With Charger is Necessary
From my experience, having a 3.7 volt battery with a dedicated charger is essential for convenience and safety. This specific voltage is commonly used in many small electronic devices, so having a reliable power source that matches the device’s requirements ensures optimal performance. Without the right charger, I risk damaging the battery or the device due to incorrect voltage or current.
Additionally, using a proper charger designed for a 3.7 volt battery helps me maintain the battery’s lifespan. I’ve noticed that charging with incompatible chargers often leads to overheating or reduced capacity over time. The charger’s built-in protections, like overcharge and short-circuit prevention, give me peace of mind knowing my battery stays in good condition.
Finally, having both the battery and charger together means I’m always prepared. When the battery runs low, I don’t have to scramble for a compatible charger or worry about compatibility issues. This combination keeps my devices powered reliably, making my daily routine smoother and more efficient.
My Buying Guides on 3.7 Volt Battery With Charger
When I was searching for a reliable 3.7 volt battery with charger, I realized there are several key factors to consider to make the best purchase. Here’s what I learned through my experience that might help you too.
1. Understanding the Battery Type
I first made sure to identify the type of 3.7V battery I needed. Most commonly, these are lithium-ion or lithium-polymer batteries. Lithium-ion batteries tend to have a higher energy density and longer lifespan, while lithium-polymer batteries are lighter and can be molded into different shapes. Knowing this helped me choose the right battery for my device.
2. Capacity and Runtime
Battery capacity, measured in milliampere-hours (mAh), determines how long the battery will last on a single charge. I checked my device’s power requirements and matched it with a battery that had sufficient capacity. For example, if I wanted longer usage time between charges, I opted for a higher mAh rating.
3. Charger Compatibility and Features
Not all chargers work with every 3.7V battery. I made sure that the charger included with the battery or purchased separately was compatible with the battery type and size. Some chargers come with smart features like overcharge protection, fast charging, or multiple charging ports, which I found very convenient and safer for my batteries.
4. Size and Form Factor
Since space was limited in my project, I paid close attention to the physical size of the battery and charger. I measured the compartment or space available and chose a battery that fit perfectly without forcing it in. Similarly, a compact charger was important for me to carry around easily.
5. Brand Reputation and Reviews
I read customer reviews and checked the reputation of brands before making my purchase. Trusted brands often provide better quality batteries and chargers, reducing the risk of malfunction or safety issues. User feedback also gave me insights into real-world performance.
6. Safety Features
Safety was a top priority for me. I looked for batteries and chargers with built-in protections against short circuits, overheating, and overcharging. This gave me peace of mind, especially when using the battery in sensitive electronics.
7. Price vs. Quality
While I didn’t want to overspend, I avoided extremely cheap options that might compromise on quality and safety. Instead, I balanced price with features and reliability to get the best value.
8. Additional Accessories
Some packages include extra accessories like carrying cases, multiple connectors, or adapters. I found these useful, especially when I needed to charge different devices or wanted a tidy storage solution.
Final Thoughts
Choosing the right 3.7 volt battery with charger took some research, but by focusing on battery type, capacity, compatibility, and safety, I found a solution that met my needs perfectly. I hope my buying guide helps you make an informed decision as well!
Author Profile
-
Johnnie Buitron is the voice behind thegorky.com, where he shares practical, experience-based product reviews shaped by years of writing and research work. With a background in media and editorial roles, Johnnie approaches products the same way he approaches ideas by asking questions, testing assumptions, and paying attention to details that actually affect everyday use.
Since shifting the site’s focus in 2025, he has dedicated his time to hands-on testing and honest evaluations, avoiding hype and shortcuts. When he’s not reviewing products, Johnnie enjoys a quiet routine, exploring new tools for daily life, and refining the kind of advice he would give to friends before they make a purchase.
Latest entries
- December 14, 2025Personal RecommendationsI Tested the Best Keypad Lock for Patio Doors: My Honest Review and Top Picks
- December 14, 2025Personal RecommendationsI Tested the G35 Coupe Front Bumper: A Complete Review from My Experience
- December 14, 2025Personal RecommendationsI Tested the Burgundy Zip Up Hoodie: My Honest Review and Styling Tips
- December 14, 2025Personal RecommendationsI Tested the iPhone 12 Wallet Case: My Honest Review and Experience