AA vs 18650,14500 vs AAA battery

What is a 18650 battery?

We use a lot of AA,AAA battery and 18650 3.7v battery,14500 3.7v lithium ion batteries in our daily life.But are they the same?Most of us are not clear the difference among these lithium ion batteries.Let’s analyze them one by one today.

1.The battery type

1>18650 li ion battery

• Dimensions:φ18mm*H65mm

• Material Composition:Li-ion(NCM or LiFePO4)

• Rated voltage:3.6v~3.7v,full charge voltage 4.2v

• Rated capacity:1000~3500mAh

• Cycle life:300~1000 times

• Features:Long cycle life,Low resistance,high discharge rate

• Applications:Power bank,Electric tools,flashlight,portable DVDs,E-bike,vacuum cleaner,beauty device,massager,batteries for robotics.

2>14500 li-ion lithium ion battery

• Dimensions:φ14mm*H50mm

• Material Composition:Li-ion(NCM or LCO)

• Rated voltage:3.6v~3.7v,full charge voltage 4.2v

• Rated capacity:500~1000mAh

• Cycle life:300~500 times

• Features:Rechargeable,stable voltage,

• Applications:toys,LED flashlight,head light,wireless bluetooth speaker,radio,mini fan,scanner,thermometer..

3>AA battery

• Dimensions:φ14.5mm*H50.5mm

• Material Composition:Zn-MnO₂/Alkaline

• Rated voltage:1.5v

• Rated capacity:1800~3000mAh

• Features:Non-rechargeable,

• Applications:Remote controller,wireless mouse,keyboard,body scale,toys,IOT sensor,light stick..

4>AA rechargeable battery

• Dimensions:φ14.5mm*H50.5mm

• Material Composition:Ni-MH

• Rated voltage:1.2v

• Rated capacity:1300~2800mAh

• Cycle life:500~1000 times

• Features:Rechargeable,

• Applications:Remote controller,wireless mouse,keyboard,body scale,toys,IOT sensor,light stick..

5>AAA battery

• Dimensions:φ10.5mm*H44.5mm

• Material Composition:Alkaline

• Rated voltage:1.5v

• Rated capacity:500~1200mAh

• Features:Non-rechargeable,

• Applications:Remote controller,wireless mouse,keyboard,beauty device,electric shaver,laser pointer,electric thermometer,potable glucometer,blood pressure monitor.

6>AAA rechargeable battery

• Dimensions:φ10.5mm*H44.5mm

• Material Composition:Ni-MH

• Rated voltage:1.2v

• Rated capacity:500~1000mAh

• Cycle life:500~1000 times

• Features:Rechargeable,

• Applications:Remote controller,wireless mouse,keyboard,Digital Thermometer,small toys,Laser Pointer and so on.

2.Parameters comparison

3.Safety Instructions

1>18650/14500 lithium ion battery manufacturer

• 3.7 v li ion battery 18650 must be charged with li-ion charger.

• Do not short-circuit,puncture,squeeze or throw into fire;avoid high-temperature or storage in below Zero condition.

• Do not connect positive and negative terminals with metal,storage in cool and dry condition.

• Use the cells with the same voltage,capacity,resistance for series or parallel connection.

2>AA/AAA battery

• Alkaline batteries can not be charged.

• Hi-MH batteries can be charged with Ni-MH chargers.

• Do not mix new and old batteries,different lithium batteries sizes,batteries of different brand,capacity should not be used in the same device.

• Remove the dc 3.7 v battery from long-term unused device.

3>Reminding

Do not mix 14500 lithium ion cell sizes and AA battery due to the different voltage.

Do not mix 10440 battery cell size and AAA battery due to the different voltage.

4.How to choose the right 18650 batteries vs aa?

1>If the device requires low voltage.

Here are some quick tips:Small supplies like remote controller,clock,mouse choose AA/AAA Alkaline batteries or Ni-MH rechargeable batteries.

2>If the device requires a higher and constant voltage,choose li-ion battery like 14500,18650 vs 21700,which also provide longer cycle life.

5.If you’re still not clear about selecting battery 18650 vs aa,waterproof battery,li ion battery model,please do not hesitate to contact Yilai Power directly.

No matter what kind of batteries you’re looking for,come to Yilai Power.We offer one-stop service to tailor the fittest solution for your specific applications.Yilai Power has been specialized in lithium batteries for over decades and is experienced.All of our products have obtained various certifications which show compliance of global standards.Partnering with Yilai Power for expertise and peace of mind.