You are searching for the best 18650 battery for flashlights, and not sure which model to choose for. Then you NEED to see the below list:
Some products have higher efficiency and are more reliable power sources to power the flashlight than others.
Read on and learn the best products with us.
1. EBL 3.7V Li-ion
It can be recharged more than 1,000 times via the convenient built-in USB charging port. So users do not have to buy batteries over and over again. It can be used for several years.
- Multi-safety protection: built-in circuit breaker, which automatically shuts off when fully charged or over-heated so as not to damage the battery cell
- Good capacity: 3000mAh and 3.7volt are suitable and continuous for LEDs, making the flash life longer
- Standby time up to 2 years
- LED indicator shows charging and fully-charged status
- Long recharge time: 4 hours
- Cant replace AA batteries
The battery works great on the flashlights. It has high efficiency and enhances the brightness of the LEDs.
The product is the best 18650 for flashlights. They are a bit pricey but you will get great quality and save more money as they work for several years with over 1200 charge cycles
2. Genuine 25R High Drain
An easy-to-use battery, you put it in the charger and it will take about 3 hours to charge fully.
However, the battery will not last very long and you need to recharge it every 2-3 days. This is a mid-range product suitable for LEDs.
- Good price
- Compatible with various LEDs, flashlight, tactic lights
- Easy to use
- Risk of flames
- May cause an explosion
- Do not use for vapes, e-cigarettes
If you need a product that is simple to use and don’t want to spend a lot of money, you should choose Genuine 25R High Drain.
It is a good mid-range with 2500mAh and is best suited for LEDs, tactic flashlights.
3. SHENMZ 2 Pack Battery
It is the best 18650 flashlight battery to last for a long time. Large capacity and its stability make the batteries worthy of the price.
Users can use batteries for a variety of products such as vapes, flashlights, and replacement batteries for remote controls.
- Premium quality
- 30 days return if not satisfied
- Can be used for vape, e-cigarette
- High capacity, last for a longer time than others
- Flat top batteries, not suitable for some button top devices
- Higher price than similar products
The batteries have a long runtime of about 3-4 days or more. You don’t need to charge them often.
However, it should be noted that this is a flat top battery, so it will not be used for lights with button top batteries.
4. Victagen Intelligent Charger
The charger has 2 slots to charge 2 batteries simultaneously.
Users can use different types of batteries, for example, 18650 and 14500 batteries at the same time. The LCD screen will show the full level of each battery.
- This charger is not sold with a battery
- Sufficient power is suitable for all popular batteries
- Work well with rechargeable batteries that are not equipped with a built-in charger charger
- Fast charging and universal charger
- Need to buy batteries separately
- Doesn’t work with AA sized Li-ion battery
Even some batteries which are the best 18650 for flashlights go without a charger. In such a case, you can turn to SHENMZ universal charger.
It has stability and faster charging technology that you can hardly find in other products.
5. Streamlight 22104 SL-B26
The Streamlight brand has earned a reputation for flashlights, tactical lights, etc. It also offers the best 18650 rechargeable battery for flashlights.
- The product can be recharged with a standard micro USB
- Sufficient power for very bright levels of flashlight
- Stable work
- Durable and allow the continued recharging
- Full charge time: 5 hours
- Charging cord not included
The rechargeable battery works well and is easily recharged with the Micro USB port. Although the charging port is not sold with the battery, its port is the universal port to have in our home.
The great `performance of the battery is also recommended, and it guarantees continuous use for days.
6. LCLEBM 4PCS 3400mah
The product includes both 4 batteries and 1 charger, you will not need to buy any additional tools or equipment to power your LEDs.
One great convenience is that it offers up to 4 batteries for you to use with multiple devices and recharge one by them as needed.
- Continuously charge 2 batteries with different capacity
- Maximum capacity for 18650 battery
- The charger can be used with other types of batteries
- Do not cause environmental pollution
- Does not emit harmful gases
- Flat top button
You can put an end to your hunt for the best 18650 flashlight battery when you have finally found the ultimate solution with LCLEBM products.
Not only have you just got 4 batteries with high efficiency and capacity to power the maximum brightness of your flashlights. Users will also have a suitable charger for other popular batteries.
What is the best 18650 battery?
A good quality 18650 batteries match the criteria below:
- Reliable, good 18650 battery brand such as Samsung, Sony, LG, Nitecore, Panasonic
- High-drain ample (> 8A) rating that helps battery works well with heavy power tools
- High capacity helps it run a long time before recharging.
- Good 18650 batteries have a weight of over 42g, fake ones are very light.
Tips for Extending 18650 Battery Lifespan
We’re all very familiar with the 18650 batteries, every single one of us uses them every day. Perhaps the name is new and strange to some people.
Essentially, 18650 Lithium-Ion batteries are the most popular type among the rechargeable batteries used in a lot of devices like flashlights, smoking devices, laptops, and more electronics.
I realize not many people know how to keep them longer though we all want that. I’m excited to share five tips for extending 18650 batteries life with you:
To prolong the 18650 cells, we need to know how to increase or at least maintain the number of cycle life. Cycle life is a significant indication of how long the batteries will last.
Being charged and discharged accounts for one cycle. Most of modern 18650 cells have approximately 300 to 500 cycles (300-500 charge + discharge times). More cycles mean more extended life.
The batteries also have other parameters: Capacity (mAh), Discharge Current (A), Charge Current (A) besides.
1. Keep the batteries at the appropriate temperature:
All battery manufacturers suggest users utilize and store cells at the temperature above 20 and under 25 degrees of Celsius.
They say a little lower, or higher storage temperature than recommendation can cause inefficacy. It’s measured a loss from 20-30 mAh for every 10 degrees variation. The higher deviation leads to the bigger capacity’s loss, the bigger capacity’s loss leads to faster degradation.
We are unable to take control of the temperature. It’s God’s work. We just pay attention to too low or too high temperatures and bring them away.
For example, in the winter when the temperature goes down to the freezing level, please don’t charge the batteries under that condition. Unless you want the length of cells life will be cut down quickly.
Heat is also a battery adversary like coldness. Undoubtedly it will shorten the cell’s life. Never charge the 18650 batteries or leave your devices powered by batteries near hot places such as inside the car, oven in the kitchen. Don’t let it exceed 60 degrees or else you have to buy a new one soon.
We all encounter the situation that the batteries are hot while using or charging. The cells are trying to tell you that they’re over-stressed by getting hot. They can’t speak! Don’t keep using or charging but stop it instead.
2. Don’t overcharge (above 4.2V), do undercharge (under 4.0V)
There are two factors involved in the charging process that we need to concern: cycle life and capacity. We can’t have two of them at the same time. If you do a full charge, you will have your batteries worked at full capacity.
However, a full charge probably is a stress to the cells, resulting in reducing the battery’s life unintentionally.
In opposite, a partial charge can maintain or increase the battery cycle life. And you have to accept an incomplete capacity.
You have to choose between cycle life and capacity. In the long run, you should select the cycle life to keep the batteries longer with you.
To do that, you should charge the li-ion batteries under 4.0V.
3. Lower the charge current (amps)
On the market today, there’re chargers labeled “fast chargers”. They cut down the charging time by lowering the current. It’s about 1 amp or higher.
That’s the pro, but the con is reducing the cycle life of 18650 cells. So you can use it in urgent cases but don’t use it regularly.
There’s a positive correlation between the number of cycle life and current amperage. The cycle number for 1.5, 1.0, 0.7, 0.5 amp is about 110, 200, 360, 640 relatively.
Notice the current when charging, because it affects your 18650 batteries a lot.
4. Lower the discharge current (amps)
Batteries users can opt for the cut-off voltage as well as the amperage. As recommended to charge with a lower current, we also should discharge with a lower current.
If we use a higher amperage, the power will be drained away quickly. It means that it will reduce both the capacity and the cycle of life at the same time.
In official tests, electronic giants such as LG, Samsung, Sony, Panasonic perform at 0.5 or 0.8 amps currents. How don’t we follow them?
5. Increase Your Cut-off Voltage
Unlike NiCad batteries, Li-ion batteries don’t have a charge memory. So it’s not necessary to have deep-discharge cycles. Tip no.2 tells us to charge the batteries partially, thus reversely; we should discharge partially.
Combining them means that the battery consumes one partial cycle life. This is a good way to relieve the burden on the 18650 cells, leading to an increase in the number of cycle life. Hence, it prolongs the battery’s life.
Having said that, there’re times the batteries need a full discharge. That’s when after about 30 charging times according to batteries specialists.
If we continue to do the partial discharge, perhaps it will cause the “digital memory”, leading to the decrease in the accuracy of the device power measure.
But I know that no one schedule and track the charging times. When you feel that you have used the batteries for a quite long period of time, leave them run out of power and recharge them later. This deed helps to recalibrate the power gauge.
If we discharge cells with a voltage below 2.5V per cell, the inbuilt safety circuit will open, and we may have to throw the batteries sooner than we expected.
At that time, the official charger is used no longer. From now on, you had better only discharge to 3,2V.
Some people may want to have an extra battery for their device. It’s a good plan B, but the common mistake is that they keep it in a fully charged status when not being used.
Because by doing that, you are unintentionally setting the process of lithium-ion oxidation at the highest rate. If you also have the extra batteries, don’t do that.
Instead, you should store the lithium batteries at 40% discharge, in a refrigerator, and absolutely not the freezer.
FAQs about Best 18650 Batteries
Below are the questions that people are asking about 18650 batteries:
#1. Which battery is better Li-ion or NiMH?
Li-ion batteries are better and became popular than NiMH because they have durability, long life, high drain, and large capacity than NiMH batteries.
Benefits of NiMH Batteries:
- Popular in many sizes
- Low voltage operation
- Cheap and easy to replace
Benefits of Li-ion batteries:
- Working in a long life
- High voltage per cell
- Always rechargeable
#2. Can I use AA batteries instead of 18650?
No. The AA battery and 18650 batteries are so different in size as well as voltage.
AA battery has 1.5V, whereas 18650 batteries have 3.7V. About the size, 18650 is bigger and longer than the AA battery.
#3. Are 18650 batteries the same size as AA?
No. The 18650 batteries are bigger than AA. The size of 18650 is 18mm x 65mm. It often used in led flashlights, a video doorbell, laptops, vaping, mods, and high-drain devices.
#4. Are there different types of 18650 batteries?
Yes. There are 4 types of 18650 batteries:
- IMR18650 – Lithium Manganese rechargeable
- INR18650 – Lithium Manganese Nickel rechargeable
- ICR18650 – Li-Cobalt rechargeable
- NCR – Nickel-Cobalt rechargeable
#5. Do 18650 batteries explode?
Yes. The short circuit, overcharging, over-discharging, high current charging, and high temperature are problems that cause the explosion.
So I highly recommend the smart 18650 battery chargers that have a protection circuit built-in.
#6. What is the most powerful 18650 battery?
SONY VTC6 has 3000mAh of capacity and high-drain at 30A. It is rated as the most powerful 18650 battery.
#9. How often should you replace 18650 batteries?
It depends on how often you use them, most of the good quality 18650 batteries have 1000 cycle recharging. Most people replace 18650 batteries after six months to a year.
#11. How do I choose a 18650 battery?
As for choosing a good cheapest 18650 battery, you should consider 3 factors below:
- Choosing a reliable brand because there are many fake 18650 batteries, fake capacity, and amps out there.
- Capacity: the larger capacity, the longer working on your devices.
- Amps rating: high drain rating helps 18650 batteries work well on heavy load.
With recommended products, you should choose a battery with a capacity of 3400mAh for lights with high lumens to get optimal brightness.
Batteries with a capacity of 2600mAh or more will be suitable for smaller LEDs and tactical lights for home use.
In addition, the best 18650 flashlight battery that should also go with is a universal charging port, either USB or micro USB, or a built-in charger for convenience.
These 18650 batteries recommended in this list are not just best for high-power flashlights, but also best for a cordless drill, a video doorbell, power tools, laser pointer, headlamp, led torch, tactical flashlight, high lumen flashlights, toys, ebike, and more.
That is all about the best 18650 batteries for flashlights.
Hopefully, my cheapest 18650 battery review helps you buy the cheap good quality 18650 battery for high-power flashlights.
Above are the top 5 tips to expand the 18650 batteries to last longer. They’re so easy to apply, just need a little attention.
Then you can save money and save the cells as well. Share if you find it helpful.