li-ion cylindrical cell 14500 750mah 3.7v Manufacturer in China
Featuring an AA size of 14mm diameter and 50mm length, li-ion cylindrical cell 14500 is a popular model widely used in small electrical appliances for toothbrushes, LED flashlights,e-cigarettes, toys, and medical devices.
As the leading li-ion battery manufacturer, VTCBATT can customize the 14500 cells in different capacity options of 500mAh,750mAh,800mAh,900mAh for different appliance operations. But li-ion cylindrical cell 14500 750mah 3.7v is the most typical one. Besides the capacity, the output connection of 14500 li-ion 3 7v can also be customized with USB or solder tag for different product designs.
li-ion cylindrical cell 14500 750mah Picture
14500 li-ion 3 7v Battery Production Video.
VTCBATT adopts automatic production for 14500 li-ion 3 7v cells, which ensures ultimate safety and reliability of the battery cells. During the cell group process, the best 14500 battery 3.7v li-ion rechargeable in great conformity of voltage, capacity, and resistance will be chosen to assemble into a big battery pack.
14500 li ion battery Advanatage
The 14500 li ion akku can maintain 1000 times cycle life, providing a stable power supply for low-power electrical appliances for 2-3 years. It is not only cost-effective, but also convenient without frequent replacements.
Featuring high energy density with 200wh/kg to 250wh/kg, standard 14500 3.7v li-ion lithium rechargeable battery aa can reach a max 2000mAh capacity after assembly.
It’s much more powerful than normal alkaline or zinc AA batteries.
Compared with other li-ion rechargeable batteries, the 14500 battery 3.7V li-ion rechargeable is much cost-effective due to large-scale automatic production.
Due to the environmental policy, 14500 li ion 3 7v is widely used to replace alkaline or Zinc AA batteries.
Applications
ToothbrushLi-ion cylindrical cell 14500 is small and lightweight, which is ideal for the usage in a toothbrush. Furthermore, this rechargeable 14500 can support daily usage with charge and discharge to reduce frequent battery replacement and save cost.
LED flashlightsThe AA size of the cylindrical cell 14500 perfectly fits in the LED flashlights, which is smart in size and powerful to provide continuous power for the LED flashlights. Due to frequent usage ,the rechargeable lithium 14500 battery can also be charged daily to allow daily usage.
Medical devicesThe 14500 li-ion cells are compact and safely used in many medical devices, such as portable diagnostic or monitoring tools. The smart AA size allows the convenience of taking the portable diagnostic outside and caring for patients at any time.
ToysMost electronic toys are designed for the li-ion rechargeable battery input, which 14500 rechargeable li-ion battery can perfectly fit. Furthermore,14500 li-ion cells are cheaper, which can reduce the toy’s cost and improve the sales volume.
li-ion cylindrical cell 14500 750mah 3.7V Spec
- Specification
| Type | parameter | parameter |
|---|---|---|
| 3.1 Capacity | Nominal Capacity: 800mAh (discharge with 0.2C to 2.75V) Minimum Capacity: 780mAh (discharge with 0.2C to 2.75V) | |
| 3.2 Nominal Voltage | 3.7V | |
| 3.3 Internal Impedance | ≤70mΩ | |
| 3.4 Standard Charge | Constant current 0.2C(160mA) Constant voltage 4.2V End condition(Cut off) 16mA | |
| 3.5 Max. Charge Voltage | 4.2V | |
| 3.6 Rapid Charge Current | 0.5C(400mA) | |
| 3.7 Standard Discharge | Constant current 0.2C(160mA) End voltage(Cut off) 2.75V | |
| 3.8 Max. Discharge Current | 1C(800mA) | |
| 3.9 Weight | 19.5g | |
| 3.10 Max. Dimension | 14.4*50.3mm | |
| 3.11 Operating Temperature (Charge) | Temperature | Max. Charge Current |
| 0℃ ≤ T ≤ 10℃ | 0.2C | |
| 10℃＜T ≤ 20℃ | 0.5C | |
| 20℃＜T ≤ 45℃ | 1C | |
| 3.12 Operating Temperature (Discharge) | Temperature | Max. Discharge Current |
| -20℃ ≤ T ≤ 0℃ | 0.2C | |
| 0℃ ＜T ≤ 10℃ | 0.5C | |
| 10℃＜T ≤ 60℃ | 1C | |
| 3.13 Storage Temperature | Within one month: -20 ~ 45 ℃ Within six months: -20 ~ 35 ℃ Within one year: -20 ~ 25 ℃ | |
| 3.14 Overheat protection | 70℃ (The cells must stop discharging when surface temperature exceeds 70 ℃ ) | |
A: Yes, 14500 lithium-ion batteries are almost the same size as standard AA batteries.
But normal AA batteries are 14.5mm in diameter and 50.5mm in length.
The 14500 li-ion battery is 14mm in diameter and 50mm in length.
A: No. You can’t use 14500 instead of AA directly.
- Identify the AA battery chemistry and whether it is rechargeable.
Can’t use the 14500 Li-ion battery to replace the AA alkaline and AA Nimh battery because of different nominal voltage.
| Type/Spec | 14500 Li-ion | 14500 Lifepo4 | CR14500 LiMno2 | ER14500 LiSoci2 | AA Alkaline | AA NiMH (Rechargeable) |
| Rechargeability | Rechargeable | Rechargeable | Non-rechargeable | Non-rechargeable | Non-rechargeable | Rechargeable |
| Nominal Voltage | 3.7 V | 3.2V | 3.0V | 3.6V | 1.5 V | 1.2 V |
| Fully Charged Voltage | 4.2 V | 3.65V | 3.4V | 3.67V | ~1.6 V | ~1.4 V |
| Batttery Chemistry | Lithium-ion | Lifepo4 | LiMno2 | LiSoci2 | Zinc-Manganese Dioxide | Nickel-Metal Hydride |
- Slight size difference
Standard 14500 Li ion and AA alkaline, and NiMh have 0.5mm tolerance, which means some enclosures are slightly loose to fit them.
| Battery Type | Diameter | Length |
| 14500 Li-ion | 14 mm | 50 mm |
| AA (Alkaline/NiMH) | 14.5 mm | 50.5 mm |
A: Only li-ion cylindrical cell 14500 is rechargeable; the other 14500 batteries are non-rechargeable.Use a specific 14500 battery charger with a matched fully charge voltage 4.2V and current max 0.5C.
A: 14500 batteries are in the size of 14mm diameter and 50mm length. It may be in many different battery chemistry types of li-ion rechargeable, lifepo4 rechargeable, limno2 non-rechargeable, LiSoc2 non-rechargeable.
A: Only li-ion 14500 and lifepo4 14500 batteries are rechargeable.
A: 14500 and 18650 batteries can be in the same battery chemistry of lithium ion or lithium iron phosphate battery formats, but they are different in size, capacity, power output, and applications.
1. Size Difference:
The 14500 battery is in a 14mm diameter and 50mm length
The 18650 battery is in an 18mm diameter and 65mm length.
2. Capacity Difference
Li-ion 14500 battery can reach 750mAh,800mAh, and 900mAh.
Li-ion 18650 battery can reach 2000mAh,2200mAh,2500mAh,3000mAh,3200mAh,3500mAh.
3. Power Output Difference
Li-ion 14500 battery normally can support a max 3-5C discharge rate.
Li-ion 18650 battery can support a max 20C-30C discharge rate.
4. Application
Li-ion 14500 battery is typically used in small portable devices, such as compact LED flashlights, small toys,bluetooth speakers, and toothbrushes.
Li-ion 18650 battery is widely used in many devices, such as large flashlights, headlamps, electric bikes, power tools, power banks.
A: Yes. It is safe to use the 14500 USB rechargeable batteries, which have an internal protection circuit against overcharge,overdischarge, and overcurrent.
A: No. Not all the 14500 batteries are rechargeable. Pls refer to the table below.
| Type/Spec | 14500 Li-ion | 14500 Lifepo4 | CR14500 LiMno2 | ER14500 LiSoci2 | AA Alkaline | AA NiMH (Rechargeable) |
| Rechargeability | Rechargeable | Rechargeable | Non-rechargeable | Non-rechargeable | Non-rechargeable | Rechargeable |
| Nominal Voltage | 3.7 V | 3.2V | 3.0V | 3.6V | 1.5 V | 1.2 V |
| Fully Charged Voltage | 4.2 V | 3.65V | 3.4V | 3.67V | ~1.6 V | ~1.4 V |
| Battery Chemistry | Lithium-ion | Lifepo4 | LiMno2 | LiSoci2 | Zinc-Manganese Dioxide | Nickel-Metal Hydride |
A: No. You can’t use the 18650 battery charger to charge a 14500 battery directly.
Since the 18650 battery has a higher capacity, its charge current is too high for a standard 14500 battery. You need to use a specific 14500 battery charger.
