STATIK has launched a set of rechargeable AA lithium batteries featuring an integrated USB-C charging port. The kit includes four cells, a one-to-four USB-A to USB-C charging cable, and a storage case.
The nominal energy per cell is 2800mWh, with a rated cycle life of up to 1200 times. By integrating a USB-C interface on the side of the battery casing, it eliminates the need for the dedicated charging base required by traditional NiMH rechargeable batteries. Users can charge all four cells simultaneously using a standard smartphone charger, with a full charge taking approximately 2 hours according to official specifications.
This product also simulates the discharge curve of a 1.5V alkaline battery. Devices such as smart locks, camera flashes, and game controllers can correctly trigger low-battery warnings, avoiding sudden power loss.
Founded in 2021 and headquartered in Elk Grove Village, Illinois, USA, STATIK is operated by a startup team from Curv Group/KeySmart.
STATIK's product line primarily consists of magnetic charging cables (Statik 360/MagStack), power banks, 5-in-1 travel chargers, wireless/audio accessories, and mobile peripherals. Positioned as mid-range "cost-effective durable accessories," the company currently has a team of over 100 people, products distributed in 21 countries, over 8 million users, and more than 1000 retail channels.
Product Appearance
The front of the packaging features a white background design with a black plastic hanging tab at the top. The upper right corner displays the STATIK brand logo, a product rendering, and the product name.
The back of the box lists application scenarios and key selling points.
Upon opening the package, all items are revealed: four AA rechargeable lithium batteries housed in a transparent plastic storage case, along with an included USB-A to USB-C one-to-four charging cable.
The included charging cable features a one-to-four split design. The input end is a single standard USB-A male connector, while the output splits into four USB-C male connectors. This allows simultaneous charging of four batteries using just one USB-A power source.
The four batteries are neatly stored in the transparent plastic case, which features a snap-lock closure and individual compartments for insulation during daily storage and ease of transport.
When taken out and stood upright, the batteries feature a silver glossy wrap. The front vertically displays the STATIK brand logo, polarity markings, and rated energy information.
A view of the battery back shows a USB-C charging port located on the side near the positive terminal at the top. Detailed specifications and safety warnings are printed below.
Close-up of the USB-C interface, featuring a black insert. An LED charging status indicator is integrated inside; the green light blinks during charging and stays solid when fully charged.
Complete specification parameters are printed on the battery side:
Product Name: AA Rechargeable Lithium Battery
Specification: AA 1.5V Li-ion
Brand: Statik
Model: PUP-0100
Rated Energy: 2800 mWh
Origin: Made in China
The product has passed KC and CE certifications.
English warnings are printed below, advising users not to short-circuit, incinerate, heat, disassemble, or mix with other types of batteries.
The product length is approximately 50.3mm.
The product diameter is approximately 14.0mm.
The weight of a single battery is approximately 17.7g.
Charging Test
The green light blinks during charging and turns solid when fully charged.
Using the POWER-Z KM003C tester, the input state of a single battery was measured. The input voltage was approximately 4.97V, the charging current was approximately 0.36A, and the charging power was approximately 1.77W.
Discharge Test
Next, constant-current discharge tests were conducted on the STATIK AA rechargeable lithium batteries at different current levels. The test environment temperature was 25±2°C, and the discharge cut-off voltage was900mV.
First, a 0.1A discharge test was performed. The output voltage decreased steadily as capacity was consumed, simulating the discharge voltage characteristics of traditional alkaline batteries. The final measured discharged capacity was 2007mAh.
Under the 0.1A discharge test, the measured discharged energy was 2599mWh.
The discharge current was increased to 0.5A. The battery voltage drop curve remained steady, with a final measured discharged capacity of 2013mAh.
Under the 0.5A discharge test, the measured discharged energy was 2641mWh.
Finally, a high-current discharge test at 1.5A was conducted. The final measured discharged capacity was 1686mAh.
Under the 1.5A discharge test, the measured discharged energy was 1999mWh.
Camera Flash Test
In practice, these four STATIK AA rechargeable lithium batteries were used with the Godox TT685II speedlite flash.
After inserting the four batteries into the flash unit and powering it on, the flash charged quickly. The test button in the lower left corner lit up green, indicating normal operation at the maximum 1/1 power setting.
With the Godox TT685II speedlite attached to the hot shoe of a Sony A7M4 camera, testing confirmed that the STATIK battery could drive the flash normally, performing no differently from traditional alkaline batteries.
Having reviewed the appearance, charging power, and tests, we now proceed to the teardown section.
Teardown
First, the external silver wrap is removed. Inside, the structure consists of a cylindrical steel-case lithium cell at the bottom and a charge/discharge control module at the top.
Removing the white ring-shaped insulation sticker from the top positive terminal reveals a blue circular PCB surrounding the positive metal cap.
Separating the top charge/discharge control module's metal ring from the cylindrical lithium cell below, the cell's positive terminal is protected by a white insulation washer.
Inside the top control module, there is a black plastic insulation bracket. A spring-loaded pin extends through a reserved hole to connect with the positive terminal of the lithium cell below.
After removing the black plastic insulation bracket, a small blue circular PCBA board is found embedded within the metal housing.
Front view of the PCBA board: A USB-C female connector is soldered at the bottom. In the center, a gold-plated spring pin connects to the cell's positive terminal. At the top, a charge/discharge management chip is located, with an inductor and diode arranged on the right.
The back of the PCBA board features the positive metal cap.
The Injoinic IP5167 is a highly integrated power management chip designed specifically for lithium-to-alkaline battery solutions, utilizing a DFN8L 2*3 package.
The chip integrates core functions including a synchronous buck converter, lithium battery charging management, and status indication within a single device. Its peripheral circuitry is extremely simple, significantly reducing overall size and effectively lowering BOM costs.
In terms of discharge performance, the chip uses a COT architecture buck converter, achieving a maximum discharge efficiency of 96%. It provides high-current output capabilities of up to 1.5V/3.5A or 3.0V/2A.
To align with traditional alkaline battery usage habits, its output voltage supports linear or stepwise changes, accurately simulating the characteristic gradual voltage drop of alkaline batteries as capacity depletes.
Regarding charging and battery compatibility, the IP5167 supports a maximum charging current of 1.0A (configurable via external resistors) and is widely compatible with various lithium batteries ranging from 4.20V to 4.40V, as well as 3.2V LiFePO4 batteries. Additionally, the chip features automatic detection of charger insertion/removal and auto-recharge capabilities, eliminating the need for complex external control.
Furthermore, the chip excels in power consumption control and system reliability, with a no-load static current as low as 4 µA and a sleep current under undervoltage conditions less than 1.5µA.
The IP5167 also comprehensively integrates multiple safety protection mechanisms, including over-voltage, over-charging, over-discharging, undervoltage, short-circuit, and over-temperature protection. Combined with external NTC temperature detection and a single-pin LED indicator, it ensures stable system operation and provides intuitive feedback on charging/discharging status.
Close-up of the USB-C female connector, featuring an exposed tongue design.
All components have been disassembled; here is the family photo.
Conclusion
The STATIK rechargeable lithium battery adopts standard AA dimensions. By integrating a USB-C port on the top side of the body, it allows users to charge four batteries simultaneously without carrying a dedicated charging base.
Measured results show a single-cell charging power of approximately 1.77W. In constant-current discharge tests at 0.1A, 0.5A, and 1.5A, the discharged energies were 2599mWh, 2641mWh, and 1999mWh respectively. The discharge voltage drops steadily with capacity consumption, simulating the discharge curve of traditional 1.5V alkaline batteries, allowing devices like smart locks, game controllers, and flashes to accurately detect remaining battery level.
Additionally, in practical testing with the Godox TT685 II speedlite, this battery achieved fast recycling and flashing even at the 1/1 full-power setting, performing identically to traditional alkaline batteries. Thanks to the built-in USB-C interface, photographers do not need to carry separate adapters, reducing gear burden for outdoor shoots.
Through teardown analysis, Chongdiantou learned that the battery internally consists of a cylindrical steel-case lithium cell combined with a top-mounted charge/discharge control module. The top PCBA board houses the Injoinic IP5167, a highly integrated lithium-to-alkaline chip. A single chip integrates charging management, synchronous buck conversion, LED status indication, and multiple protection functions, with very simple peripheral circuitry.
The product features a reasonable internal structural design and stable discharge performance, making it an excellent standby choice for photography enthusiasts needing AA batteries.