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Li-Ion 10440 Cylindrical Cell (AAA size) 3.7V 350mAh (LC-10440, Flat Top) - UN38.3 Passed & IEC62133:2012 Listed

With TabsDischarge Curve
Your Price: From $2.95 to $3.35

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Add Tabs?:


  • 3.7V 10440 size Cylindrical Li-Ion Cell, same size as AAA 1.2V rechargeable NiMH and NiCd battery
  • No memory effect and longer storage life than NiMH Batteries
  • Lighter weight and higher energy density than any other rechargeable battery
  • 10440 cell has same size as an AAA size battery, but has 3 times higher voltage
  • This is flat top cell, if you need button top cell, please check (LC-10440A) - Note: Due to button top is too small for welding not recommend to assemble battery pack!
Nominal Voltage Average 3.7 V
Nominal Capacity 350 mAh,
Max.Charging Current 0.35A Max.
Max.Discharging Current 0.35A max.
Dimensions(DxH) 10.2mm x 43mm
Weight 0.3 oz (8 g)
Internal Impedance Internal Impedance: less or equal to110 milli-ohm (with PTC)
Cycle Performance 80% of initial capacity at 300 cycles
Discharge Curve LC-10440 Discharge Curve

Please download the Specification here


  • Can use special PCB (protection IC) to build 10440 battery pack.
  • Utility metering, Automatic meter reading, Alarm and security device, Memory back up, Tracking system, RC Cars and RC


  • Li-Ion Batteries may explode if charged or discharged improperly.
  • You must possess knowledge of electronic and understand hot to handle Li-ion battery.
  • We reserve the right not to sell and void the warranty it you don't meet the above statement.
  • You must use a protection IC (PCB) to keep battery from overcharge and over discharge
  • Never solder directly onto the Li-ion battery as overheat might cause battery to explode. If you are making a pack or need to solder batteries together, you need to get battery with tabs on it. You will solder to tabs instead directly onto the battery.
  • Please read more safety warning about Li-ion battery (click to link)
  • California residents: Warning: Cancer and Reproductive Harm - See Prop 65 Warnings

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  • For DIY, you may add tabs as an option at a little extra cost
  • Please install our PCB or your own PCB withthe followingfeature:
    • 4.2V/cell over-charge protection
    • 2.5V/cell over-discharge protection
    • Max currentover-drain protection
    • Shortcircuit protection.
  • Please choose our Smart Li-Ion Battery Chargers and Battery holder to charge single Li-Ion cell one at a time.
  • Excellent cells to build a battery pack, Please click here to view battery pack made by LC-10440
  • Never use conventional DC charger to recharge the Li-Ion battery.

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Product Reviews

(4 Ratings, 4 Reviews) Average Rating:
Andre B. (QC, Canada) 12/2/2016 2:00 PM
The product is good, very fast shipping
"Very satisfied. International order arrived fast and without problems, responsi
MR73053 (Marburg, Germany) 5/30/2012 12:16 PM
"Very satisfied. International order arrived fast and without problems, responsive customer service."
Great cells
tmz (Unknown) 1/1/2008 7:25 AM
The batteries works fine and to everyone's joy, the 14.1 mm +- 0.2 mm diameter specification was too wide. All of my cells was pretty much 14.1 mm +- 0.05 mm. Four of them fit nicely side by side into an unbored D-sized Mag and a bit tightly, but not too tightly, into modamag's battery adapter. Electrical they where fine although I haven't done any exact runtime-plots with them yet. I expect the 750 mAh claim to be just as good as any NiMH capacity claims. They deliver more current than they are rated fore but I can't say how life expectancy might change from that. I found one typo about the data on the webpage. They claim 2.5C maximum drain but the datasheet says 2C. If you don't plan to use them for 10000 cycles, I wouldn't worry so much about it.
GREAT SUCCESS with Team Losi's RC 1/36th Scale
Customer1071 (Unknown) 4/24/2007 5:42 PM
Now my Micro-T FLIES and lasts TWICE AS LONG; batteries don't even get slightly warm!
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UN 38.3 Safety Test

We own a national standard UN38.3 testing lab. We can provide UN38.3 test service to our customer.

If you want to set up your own lab, we also provide UN38.3 & IEC62133 equipments and onsite training. Email us for the quote and lead time.
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Recommendations on How to get ≤30% Rated Capacity for Shipping
Thermal Abuse Test for IEC62133
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