[Next-Generation Safety] cheero Launches New Mobile Battery Adopting "Semi-Solid-State Battery"! Combining High Safety That Doesn't Ignite Even in Nail Penetration Tests with the Convenience of Wireless Charging, Stand, and Built-in Cable
TRA Co., Ltd. will release "cheero PitaPower 5000mAh," a mobile battery utilizing next-generation semi-solid-state batteries for superior safety and convenience, on May 12, 2026. This product addresses growing concerns about lithium-ion battery risks by offering features like wireless charging, a folding stand, and a strap-type cable, all while being proven safe from ignition in nail penetration tests.
📋 Article Processing Timeline
- 📰 Published: May 8, 2026 at 01:04
- 🔍 Collected: May 7, 2026 at 16:31
- 🤖 AI Analyzed: May 7, 2026 at 17:11 (40 min after Collected)
TRA Co., Ltd. (Headquarters: Osaka City; Representative Director: Tooru Azuma) will release the "cheero PitaPower 5000mAh" (model number: CHE-137) mobile battery, which adopts next-generation semi-solid-state batteries and pursues safety and ease of use, starting from noon on May 12, 2026 (Tuesday).
To commemorate the launch, a limited number of 300 units will be offered at a special price of 3,280 yen, down from the regular selling price of 4,480 yen.
■ The era of choosing mobile batteries based on "safety" is here
With the spread of lithium-ion batteries, concerns about accidents such as ignition and swelling have increased. cheero, prioritizing "peace of mind and safety," has focused on "semi-solid-state batteries," which have significantly lower risks of leakage, swelling, and ignition compared to conventional batteries.
We have condensed "wireless charging," "folding stand," and "strap-type cable" into one unit, pursuing everyday usability, and have developed a product that will be the next generation standard.
■ Semi-solid-state battery "cheero PitaPower 5000mAh" safety demonstrated
We conducted nail penetration tests on semi-solid-state batteries and conventional lithium-ion batteries to verify the differences in ignition and heat generation.
We have compiled a video, so please take a look.
< Main Features of this Product >
Equipped with semi-solid-state batteries with safety in mind
Adopts semi-solid-state lithium-ion batteries with gel-like electrolytes. Compared to conventional lithium-ion batteries, a reduction in the risk of leakage, swelling, and ignition can be expected. This is a mobile battery excellent in safety and practicality.
No ignition even if pierced by a nail or cut
No ignition was confirmed in nail penetration tests and cutting tests.
*Although semi-solid-state batteries have higher safety than regular lithium-ion batteries, they do not guarantee non-ignition in all situations.
Just place it, and it charges immediately. Wireless charging compatible
You can easily charge your wireless charging compatible smartphone by simply placing it on top, without the hassle of plugging in a cable. For magnetic devices (such as MagSafe compatible iPhones), it adheres firmly and is less likely to slip, allowing for stable charging even when out and about.
Furthermore, it supports simultaneous wireless + cable charging. Since two devices, such as a smartphone and earphones, can be charged at the same time, it can be used efficiently outdoors or at your desk.
Built-in "folding stand" for convenient viewing
It has a built-in folding stand that can be quickly set up when needed. For magnetic devices, you can use it standing up while wireless charging, making it convenient for various situations such as watching videos, using SNS, or checking screens during work.
Moreover, when holding it, it can also be used like a smartphone grip, allowing for more stable operation.
Palm-sized 5000mAh
While securing a capacity of 5000mAh, which can fully charge a smartphone approximately once (*), it has a compact design that fits into the gaps in your bag. It achieves a size ideal for everyday use.
*When charging an iPhone 15 with a cable connection
Strap-type USB-C cable included
A PD-compatible USB-C to C cable is included. Since it can be attached to the main unit as a strap, you don't have to worry about forgetting the cable when you go out. This one cable completes both charging the product and powering your smartphone.
Various protection functions included
Automatically stops power supply when overcharging, over-discharging, short-circuiting, or overheating is detected. It also has an NTC (temperature sensor) that automatically stops input/output when abnormal heat generation is detected.
< Product Specifications >
Product Name
cheero PitaPower 5000mAh (PitaPower)
Model Number
CHE-137
Dimensions
Main unit: approx. 104×68×15 mm / Included cable: approx. 200 mm
Weight
Approx. 145g *including cable (5g)
Battery Capacity
5000mAh / 3.85V (19.25Wh)
Built-in Battery
Semi-solid-state lithium-ion battery
Input
USB-C port PD : 5V/3A, 9V/2A (18W max.)
Output
①USB-C port
PD : 5V/3A, 9V/2.22A, 12V/1.67A (20W max.)
PPS : 5V-5.9V/3A, 5V-11V/2A (22W max.)
②Wireless
5W, 7.5W, 10W, 15W
(Max 7.5W for iPhone)
*Total output 15W max when two devices are charged simultaneously.
Rated Voltage/Rated Capacity
5V/3000mAh, 9V/1600mAh, 12V/1300mAh
Main Unit Charging Time
Approx. 1.5 hours (when using a separately sold PD18W adapter)
Various Protection Functions
Automatic stop function that operates during overcharge (voltage/current), over-discharge (voltage/current), short circuit, overheating, and foreign object detection (wireless output part).
Upon device charging completion.
To commemorate the launch, a limited number of 300 units will be offered at a special price of 3,280 yen, down from the regular selling price of 4,480 yen.
■ The era of choosing mobile batteries based on "safety" is here
With the spread of lithium-ion batteries, concerns about accidents such as ignition and swelling have increased. cheero, prioritizing "peace of mind and safety," has focused on "semi-solid-state batteries," which have significantly lower risks of leakage, swelling, and ignition compared to conventional batteries.
We have condensed "wireless charging," "folding stand," and "strap-type cable" into one unit, pursuing everyday usability, and have developed a product that will be the next generation standard.
■ Semi-solid-state battery "cheero PitaPower 5000mAh" safety demonstrated
We conducted nail penetration tests on semi-solid-state batteries and conventional lithium-ion batteries to verify the differences in ignition and heat generation.
We have compiled a video, so please take a look.
< Main Features of this Product >
Equipped with semi-solid-state batteries with safety in mind
Adopts semi-solid-state lithium-ion batteries with gel-like electrolytes. Compared to conventional lithium-ion batteries, a reduction in the risk of leakage, swelling, and ignition can be expected. This is a mobile battery excellent in safety and practicality.
No ignition even if pierced by a nail or cut
No ignition was confirmed in nail penetration tests and cutting tests.
*Although semi-solid-state batteries have higher safety than regular lithium-ion batteries, they do not guarantee non-ignition in all situations.
Just place it, and it charges immediately. Wireless charging compatible
You can easily charge your wireless charging compatible smartphone by simply placing it on top, without the hassle of plugging in a cable. For magnetic devices (such as MagSafe compatible iPhones), it adheres firmly and is less likely to slip, allowing for stable charging even when out and about.
Furthermore, it supports simultaneous wireless + cable charging. Since two devices, such as a smartphone and earphones, can be charged at the same time, it can be used efficiently outdoors or at your desk.
Built-in "folding stand" for convenient viewing
It has a built-in folding stand that can be quickly set up when needed. For magnetic devices, you can use it standing up while wireless charging, making it convenient for various situations such as watching videos, using SNS, or checking screens during work.
Moreover, when holding it, it can also be used like a smartphone grip, allowing for more stable operation.
Palm-sized 5000mAh
While securing a capacity of 5000mAh, which can fully charge a smartphone approximately once (*), it has a compact design that fits into the gaps in your bag. It achieves a size ideal for everyday use.
*When charging an iPhone 15 with a cable connection
Strap-type USB-C cable included
A PD-compatible USB-C to C cable is included. Since it can be attached to the main unit as a strap, you don't have to worry about forgetting the cable when you go out. This one cable completes both charging the product and powering your smartphone.
Various protection functions included
Automatically stops power supply when overcharging, over-discharging, short-circuiting, or overheating is detected. It also has an NTC (temperature sensor) that automatically stops input/output when abnormal heat generation is detected.
< Product Specifications >
Product Name
cheero PitaPower 5000mAh (PitaPower)
Model Number
CHE-137
Dimensions
Main unit: approx. 104×68×15 mm / Included cable: approx. 200 mm
Weight
Approx. 145g *including cable (5g)
Battery Capacity
5000mAh / 3.85V (19.25Wh)
Built-in Battery
Semi-solid-state lithium-ion battery
Input
USB-C port PD : 5V/3A, 9V/2A (18W max.)
Output
①USB-C port
PD : 5V/3A, 9V/2.22A, 12V/1.67A (20W max.)
PPS : 5V-5.9V/3A, 5V-11V/2A (22W max.)
②Wireless
5W, 7.5W, 10W, 15W
(Max 7.5W for iPhone)
*Total output 15W max when two devices are charged simultaneously.
Rated Voltage/Rated Capacity
5V/3000mAh, 9V/1600mAh, 12V/1300mAh
Main Unit Charging Time
Approx. 1.5 hours (when using a separately sold PD18W adapter)
Various Protection Functions
Automatic stop function that operates during overcharge (voltage/current), over-discharge (voltage/current), short circuit, overheating, and foreign object detection (wireless output part).
Upon device charging completion.