Vapcell P1835A 18650 Rechargeable Battery – High Capacity with Built-in Charging

The Vapcell P1835A is an 18650-format rechargeable battery with a rated capacity of 3500 mAh and a continuous discharge current of 10A. It is suitable for flashlights, tactical equipment, and other devices that require a reliable and powerful power source.

The battery features a built-in Micro USB charging port—a convenient feature that allows for direct charging without a separate charger. The negative terminal protection ensures stable operation during prolonged discharge at 10A.

Key Features

Rated capacity: 3,500 mAh
Minimum capacity: 3,350 mAh
Rated current (continuous): 10 A
Rated voltage: 3.6V
Dimensions: 18.4 x 70.2 mm
Weight: 52 g (approx.)
Protection: negative terminal—allows continuous discharge at 10A

Built-in Micro USB charging

USB charging current: 750 mA
Normal charging: 1500 mA, CCCV 100 mA cut-off
Fast charging: 3000 mA
Internal resistance: 35 mΩ (approx., AC 1 kHz)
Lifespan: ≥ 800 cycles at 1C discharge / 70% DOD

A Battery with or without Protection—How Do You Choose?

Protected batteries contain a small circuit board in the anode or cathode that protects against overcharging, over-discharging, and excessive current. When critical thresholds are reached, the protection circuit shuts off and safeguards the cell.

Protected batteries often have a protruding positive terminal and are suitable for flashlights with mechanical reverse-polarity protection—such as those from Acebeam, Olight, Fenix, Nitecore, Armytec, and similar brands.

It is important to note that protected batteries are not suitable for flashlights such as Zebralight and Dulotec, which are designed for unprotected batteries. They are slightly longer and wider than standard batteries because they contain additional components.

To make the right choice, measure the size of the original battery in mm and compare it with the technical specifications of the new one. If necessary, contact us for assistance.

Safety Rules

The battery may catch fire or explode if used or stored improperly. Follow these guidelines:

Do not alter, modify, disassemble, drill, cut, crush, or short-circuit the device.
Do not expose the battery to water, fire, or high temperatures.
Do not use the battery in defective devices.
Do not throw it into a fire or cause a short circuit.
Do not overcharge or undercharge the battery. Do not charge the battery at sub-zero temperatures.
Do not use the battery if the protective film is damaged.
Do not carry it in your pocket or purse—always use a protective case.

Specifications	Value
Brand	Vapcell
Model	P1835A
Category	Rechargeable battery
Format	18650
Rated Capacity	3,500 mAh
Minimum capacity	3,350 mAh
Rated Voltage	3.6 V
Discharge Current (Continuous)	10 A
USB Charging Current	750 mA
Normal charging	1500 mA, CCCV 100 mA cutoff
Fast Charging	3,000 mA
Internal Resistance	35 mΩ (approx., AC 1 kHz)
Life	≥ 800 cycles at 1C / 70% DOD
Dimensions	18.4 x 70.2 mm
Weight	52 years old (approx.)
Charging Method	Built-in Micro USB
Defense	Yes—on the negative side

Frequently Asked Questions

What is the difference between the rated capacity and the minimum capacity of the Vapcell P1835A?

The rated capacity is 3500 mAh and represents the typical value under standard discharge conditions. The minimum capacity is 3350 mAh and is the guaranteed lower limit that the battery must provide. This variation is normal for all lithium-ion cells and does not indicate a defect. When used and charged properly, the battery will operate within these limits for its entire lifespan.

How do I charge the Vapcell P1835A battery using the built-in Micro USB port?

The battery charges directly via a standard Micro USB cable without the need for a separate charger. The USB charging current is 750 mA. It also supports normal charging at 1500 mA using the CCCV method with a cut-off at 100 mA. Fast charging reaches up to 3000 mA. Do not charge the battery at sub-zero temperatures, as this may cause irreversible damage.

What types of flashlights is the Vapcell P1835A battery with protection suitable for?

This battery is suitable for flashlights designed to work with batteries that have a protruding positive terminal and mechanical reverse-polarity protection. This includes flashlights from brands such as Acebeam, Olight, Fenix, Nitecore, and Armytec. It is not suitable for flashlights such as Zebralight and Dulotec, as they are designed for batteries without protection. Before purchasing, check your flashlight’s specifications or contact us for advice.

How many charge cycles does the Vapcell P1835A battery last?

The Vapcell P1835A battery has been tested to withstand no fewer than 800 charge and discharge cycles at a 1C discharge rate and a 70% depth of discharge (DOD). This is a standard measure of longevity for lithium-ion cells. Under gentler usage conditions, the actual number of cycles may be higher. Following safety and storage guidelines significantly extends the battery’s life.

What is the role of the negative terminal protection in the Vapcell P1835A battery?

The negative terminal protection consists of a small electronic circuit board integrated into the battery’s cathode. It protects the cell from overcharging, over-discharging, and excessive current. When critical thresholds are reached, the protection automatically shuts off and breaks the circuit. Specifically, with the Vapcell P1835A, the protection allows for continuous discharge at currents up to 10A, which is unusual for many protected batteries. This makes it versatile for devices with higher power consumption.

How can I tell if a battery with protection is suitable for my flashlight?

The easiest way is to measure the dimensions of the flashlight’s original battery in millimeters and compare them to the technical specifications of the battery you plan to purchase. The Vapcell P1835A measures 18.4 x 70.2 mm. Protected batteries are slightly longer and wider than standard ones because they contain an additional circuit board. If you’re unsure, contact us and we’ll help you make the right choice.

How do I safely store a Vapcell P1835A battery?

The battery must be stored in a special protective case, in a dry and cool place. Never place it in a pocket or bag without protection—contact with metal objects can cause a short circuit. Do not expose the battery to water, fire, or high temperatures. Do not use the battery if the foil is damaged or compromised. When stored properly, the battery retains its performance characteristics and is safe to use.