works great, easy to see when batteries are charged.
The Efest PRO C4 4-Channel Battery Charger is your go-to device for fast, reliable, and safe charging of multiple batteries. With four independent charging slots, this compact charger lets you manage your power needs effortlessly, offering flexible options for charging at 0.5A on all four channels or boosting speed with 1A on two channels. Designed to work with a wide range of 3.6V/3.7V Lithium Ion IMR batteries, the PRO C4 features LED indicators for real-time monitoring and advanced safety functions such as reverse polarity protection. Durable and efficient, it’s backed by a three-year warranty for your peace of mind.
Key Features:
- Flexible Multi-Slot Charging: Charge up to four batteries at once with adjustable settings—0.5A on four channels or 1A on two channels for faster charging.
- Real-Time LED Indicators: Each charging slot features an LED indicator that shows the charging status, providing easy and clear updates on your battery progress.
- Smart Charging Protection: Automatically stops charging when batteries are fully charged, preventing overcharging and preserving battery life.
- Safety First: Integrated reverse polarity protection guards against incorrect battery insertion, ensuring safe and efficient charging.
- Wide Compatibility: Supports a variety of battery sizes, including popular models like 18650, 20700, and 21700, as well as smaller batteries like 10340 and 10440, making it perfect for diverse applications.
Battery Compatibility:
- 3.6V/3.7V Lithium Ion IMR Batteries: 10340, 10350, 10440, 10500, 12340, 12500, 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340, 16650, 17350, 17500, 17650, 17670, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650
Technical Specifications:
- Input: AC 100~240V 50/60Hz or DC 12V 1A
- Output: 4.2V ± 0.05V
- Size/Type Compatibility: ✔ 18650, ✔ 20700, ✔ 21700
What’s in the Box:
- Efest PRO C4 Battery Charger
- Standard USA Power Plug
- User Manual
- Scratch-Off Validation Serial Number
⚠ Important Safety Warnings
Improper use of a battery charger can result in overcharging, short circuits, or damage to the battery, causing FIRE, EXPLOSION, or ELECTRICAL SHOCK. Users must follow all safety guidelines to ensure proper operation. Click here to review the full safety guidelines.
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Device Compatibility:
- Use the charger only for compatible battery types and sizes as specified by the charger manufacturer. Ensure the charger is appropriate for the battery chemistry, size, and protection status (e.g., unprotected or protected cells).
- Do not charge non-rechargeable batteries (e.g., alkaline or primary cells).
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Proper Use:
- Only charge batteries in a fireproof or non-flammable area. Avoid charging on beds, couches, or other flammable surfaces.
- Do not force a battery into the charger slot if it does not fit properly. This can damage the charger or battery and may result in unsafe charging conditions.
- Inspect batteries before charging: Do not charge if the battery casing, wrapper, or terminals are damaged, dented, leaking, or bulging.
- Never leave batteries unattended while charging. Monitor the charging process, and unplug the charger when charging is complete.
- Avoid exposing the charger to liquids, high heat, or direct sunlight.
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Inspection:
- Do not use the charger if the power cord, plug, or device is damaged.
- Inspect both the charger and the battery for any signs of damage before use.
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Storage & Handling:
- Keep the charger away from children and pets.
- When not in use, unplug the charger and store it in a cool, dry place.
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Prohibited Activities:
- Do not modify or disassemble the charger.
- Do not attempt to repair a damaged charger—replace it with a new one.
- Avoid using extension cords or adapters that exceed the manufacturer’s recommendations.
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Emergency Response:
- If the charger or battery emits smoke, sparks, or a burning smell, disconnect the power immediately and move the battery and charger to a safe area.
- In case of fire, use a Class D fire extinguisher or sand to extinguish the flames.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Battery chargers must only be used with compatible battery types and operated in accordance with manufacturer instructions. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to their customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 4.7 / 5 from 67 reviews.
Rock solid charger.
Rock solid charger.
Fantastic charger !!!!
Love it. We have 2 now. They charge fast and I love the lights that show when charged.
Works. Great
Nice
Great product charges like right now done!!
Good inexpensive charger. Batteries came completely dead, andxthe charger took4.5 hours to charge them. Not too bad.
i live the fact that you can fit more than 1 size and all the features it comes with! I recommend this product to anyone, very affordable.
It really charges fast, but I've only had it for a few months. I would expect it to last years. Just had it about 6 months.
I've experienced a great improvement over my previous charger
Fast shipping. I like that its simple red / green light.
good charger, enough slots, takes all my batteries. it's a good upgrade from my luc 4 sense it can take 21700's.
Great price and works as expected. No complaints.
Nice simple inexpensive battery charger, no readouts. Just a light that's red when charging and green when done or empty. I bought it because I switched to 21700s, which is fits. But the middle two slots are not quite far enough apart for the large batteries. They do fit kind of, but it seems sketchy. Haven't had any actual problems with it yet.
Fast charger
This is a basic charger, nothing fancy. Red light means charging, green light means done. Fits my 21700's, 20700's, 26650's & 18650's in any combination. I can put a different size battery in each bay & it charges them all as it should. I also have the 2 bay version of this charger & it works just as good on all my battery sizes. Have had the 2 bay for over a year but needed more charging bays for my increasing array of batteries. Based on the performance & quality of the 2 bay version I bought this 4 bay so now I have 6 bays for charging. The 2 chargers are exactly the same size & shape so they look like a single 6 bay charger when sitting on my desk side by side. I randomly check my batteries on my volt meter after charging and they always come out of both of these charges between 4.12 & 4.2 volts so it is doing a great job.
Works great
I have had the 2 Bay version of this charger for several months. Needed to increase my charging capability so bought this one based on my experience with the 2 baqy version. Both my mods take 20700 & 21700 batteries. This 4 Bay charger will fit four 20700's at the same time & the 2 Bay will fit 2. They also fit the 21700's. This is a great basic charger with no frills. Red lights mean charging, green lights means charged.
I got it fast and it was quite a surprise. It has six docking stations and it charges 5x faster that my nitecore d2. I love this charger. Thomas t
Great charger. Never had a problem out of it so far.... and charges so fast!!!
This charger works great but unfortunately the cord that came with it did not work. I had a dc12v cord that seemed to do the trick
This is a great charger for the money. I have no complaints about it whatsoever. I would definitely buy it again if I needed it.
On time delivery
Can charge in car or home
I received my Efest charger quickly and put it to use right away with the Sony VTC6 batteries that I also ordered. It performs like a champ! Efest has always been my go-to brand in chargers. I have never had a bad product from them.
Fast
is faster to ship the order and all is original!
Chargers very quickly when you do only 2 batteries at a time. When you use all four it only charges at .5A The two center bays are a tight fit for some batteries, 18650's fit snugly in there. But the outer two bays can fit up to 26650's comfortably and works well. It's a simple charger but it does get the job done. My only complaint with it is that if you dont have the batteries perfectly centered, the "full charge" light doesn't come on (which leads me to think it may not activate the overcharge protection when you don't center your batteries correctly). But overall, it's a good charger for the price-point for a 4 bay.
Chargers very quickly when you do only 2 batteries at a time. When you use all for it only charges at .5A The two center bays are a tight fit for some batteries, 18650's fit snugly in there. But the outer two bays can fit up to 26650's comfortably and works well. It's a simple charger but it does get the job done. My only complaint with it is that if you dont have the batteries perfectly centered, the "full charge" light doesn't come on (which leads me to think it may not activate the overcharge protection when you don't center your batteries correctly). But overall, it's a good charger for the price-point for a 4 bay.
Chargers very quickly when you do only 2 batteries at a time. When you use all four it only charges at .5A The two center bays are a tight fit for some batteries, 18650's fit snugly in there. But the outer two bays can fit up to 26650's comfortably and works well. It's a simple charger but it does get the job done. My only complaint with it is that if you dont have the batteries perfectly centered, the "full charge" light doesn't come on (which leads me to think it may not activate the overcharge protection when you don't center your batteries correctly). But overall, it's a good charger for the price-point for a 4 bay.
Chargers very quickly when you do only 2 batteries at a time. When you use all for it only charges at .5A The two center bays are a tight fit for some batteries, 18650's fit snugly in there. But the outer two bays can fit up to 26650's comfortably and works well. It's a simple charger but it does get the job done. My only complaint with it is that if you dont have the batteries perfectly centered, the "full charge" light doesn't come on (which leads me to think it may not activate the overcharge protection when you don't center your batteries correctly). But overall, it's a good charger for the price-point for a 4 bay.
Sadly I actually had to pay for shipping. However I have never received anything 2 days after ordering it. I had a promo code for a battery case that I never got though. That was a bummer. Besides actually having to pay for shipping and not receiving my case I really am impressed with everything. My 4 bay charger was unbelievably cheap and the batteries were as well.
Sadly I actually had to pay for shipping. However I have never received anything 2 days after ordering it. I had a promo code for a battery case that I never got though. That was a bummer. Besides actually having to pay for shipping and not receiving my case I really am impressed with everything. My 4 bay charger was unbelievably cheap and the batteries were as well.
My purchase of an Efest Pro C4 4 channel battery charger and the 6 Sony VTC4's were a great investment. I've had no issues with either products. The charger does great with the batteries. I'll will make more purchases in the future with IMR Batteries.
My purchase of an Efest Pro C4 4 channel battery charger and the 6 Sony VTC4's were a great investment. I've had no issues with either products. The charger does great with the batteries. I'll will make more purchases in the future with IMR Batteries.
Great little charger. Nice features. Takes the worry out of leaving them to charge unattended.
Great little charger. Nice features. Takes the worry out of leaving them to charge unattended.
Packaging was fantastic, shipping was fast and accurate, products are in stellar condition, and customer service was an amazing help. Definitely will be shopping here again.