Best 10440 Flashlights

The 10440 flashlights are different from other flashlights that use 18650 or 14450 batteries as the power source. The flashlights with 10440 lithium batteries are very efficient in terms of energy density, however, they slowly lose power when not in use.

Apart from that, 10440 batteries are similar in size to AAA batteries, but their voltage varies slightly. The batteries differ from others in minor ways, so there are some differences between the specs.

There are lots of different kinds of lights out there so we gathered a few here to help you finish your research while saving time on hunting. Below is a list of four of the best 10440 flashlights so that you can choose accordingly.

4 Best 10440 Flashlights

  1. BALIT Mini Rechargeable Keychain Flashlight
  2. LXH SF-348 Cree XP-E R3
  3. UltraTac K1 Mini LED Flashlight
  4. TrustFire L1 Mini Flashlight

1. BALIT Mini Rechargeable Keychain Flashlight

The Balit mini keychain flashlight works with high-quality Cree-XPE2-R3, supplying 220 lumens of brightness and covering a beam distance of 48m.

The tail button allows easy operation. Three different brightness levels: standard, high, and strobe.

The device can be used for activities such as hiking, camping, adventure, or SOS at night.

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Strobe lights could help you by interfering with an evil doer’s sight while you are in danger.

A small rechargeable flashlight from Balit comes with a micro USB cable and a built-in 10440 battery.

Turn the tail cap so the USB cable connects.

The device will be fully charged in about 1.5 hours.

The protected charging port offers protection from water and damage, allowing you to extend the lifespan of your pocket flashlight.

It can survive accidental drops and a temporary submersion in water(IP65) thanks to its high-quality aluminum alloy construction.

This light can be used in rainy and snowy conditions.

The flashlight’s body features a knurled design to prevent slipping off the hand.

With dimensions of 2.95*0.78 inches and a weight of 1.062 ounces, the Balit mini pocket flashlight is remarkably compact.

You can easily carry it in your pocket or backpack because of the keychain and removable clip.

Connecting your flashlight to your keychain could make it easier for you to find your keys at night.

You can also clip the flashlight on your cap when fishing at night.


  1. It is not advisable to look directly at the light, and children must be supervised when using the light.
  2. To avoid damages to the LED bulb and internal parts, please stop charging it as soon as the charging light goes off.

Quick Specs

  • Brightness: 220 Lumens, illumination distance: 158 feet
  • Dimensions: 3.15 x 0.79 x 0.79 inches
  • There are three modes: Standard, High, and Strobe (SOS).
  • Built-in 10440 rechargeable battery (not detachable)
  • Charging port hidden on the device
  • Simple to Operate: Tail Switch
  • It weighs only 1.06 ounces

2. LXH SF-348 Cree XP-E R3

With this mini light by LXH, you’ll enjoy the material of stainless steel and its small, portable size.

It runs on one AAA battery and is durable, so it can be used month after month.

Essentials for your home and travels.

In case you end up dissatisfied with LXH penlights for any reason, please contact one of their helpful customer service representatives. They will help you resolve all your concerns.

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It is small enough for almost everyone’s pocket.

This is a multipurpose product, good for traveling, hunting, camping, hiking, fishing, jogging, backpacking, walking dogs, etc.

In the end, the light comes with just one mode and no mode memory, so if you don’t like it, you can check out other options.

Quick Specs

  • It is made of stainless steel
  • 180 Lumens of brightness
  • One 10440 or one AAA battery is required 
  • Running time: 2 hours
  • Reverse clicky switch
  • The switch is located on the tailcap
  • Lens: Glass
  • 30 meter beam range

3. UltraTac K1 Mini LED Flashlight

Powered by a CREE XP-G2 LED, the K1 mini flashlight offers 3 modes: high, low, and strobe.

It works with all kinds of AAA batteries. K1 keychain flashlight uses AAA alkaline battery, AAA Ni-MH battery, or 10440 lithium rechargeable battery.

It can be used for the following uses: EDC, law enforcement, security, emergency, medical services, camping, duty light, and self-defense.

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Built with aerospace-grade aluminum with a hard-anodized finish that is anti-abrasive.

This super bright flashlight is compact and lightweight, and its size and weight make it ideal for carrying everywhere.

Its waterproof properties and 5-foot impact resistance are ideal for daily use as well as in emergency situations.

This mini flashlight comes with a detachable stainless steel clip and carabiner, so it can be used as a keychain flashlight or a headlight.

Switch on/off, 3 modes of lighting:

  1. 180 lumens and 30 minutes on high
  2. 240 minutes at 60 lumens is the low setting
  3. The strobe has 180 lumens and 60 minutes

Quick Specs

  • Weight: 1.13 ounces
  • Dimensions: 2.99 x 0.59 x 0.59 inches
  • Hard-anodized aluminum body 
  • 75mm x 15mm Mini Size
  • The device weighs just 14 grams, or 0.49 ounces (without battery).
  • 180 lumens is its maximum output
  • Beam color: Cool White

4. TrustFire L1 Mini Flashlight

This tiny flashlight provides 385 lumens (only when powered by a 10440 battery), which is much brighter than most AAA flashlights.

There are three types of battery systems available for the L1.

These are a 1.2V AAA alkaline battery, 1.5V AAA NiMH rechargeable battery, and 3.7V/4.2V 10440 lithium-ion battery.

It is easy to control momentary on and rapid mode shifting (2 or 385/100 lumens) with a convenient tail switch.

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With the pocket clip, you can carry it in your pocket or attach it to your hat.

A lightweight, compact flashlight that is perfect for night walking, bedroom reading, camping, hiking, fishing, and nursing.

Ideal for pockets, handbags, backpacks, and cars).

Input and runtime (with 10440 battery) :

  • The high is 385 lumens for 25 minutes 
  • The low is 2 lumens for 48 hours
  • Beam distance: 113 meters
  • The intensity of maximum beam: 3192 cd

Quick Specs

  • IPX8 water-resistance, underwater depth of 2 m 
  • 1 meter impact resistance
  • Type III hard anodized aluminum body, anti-scratch
  • Dimension: (Length)77 mm x (Head)14.4 mm
  • Weight: 15g (without battery). 
  • Battery source: 1*10440 Li-ion / Alkaline AAA / 1 Ni-MH AAA 
  • Warranty: 3 years