SPERAS ZT20 smart battery charger main profile showing the high-definition LCD screen and independent dual charging slots
SPERAS ZT20 charger actively charging two 18650 Li-ion batteries, with the smart LCD screen displaying voltage and capacity data
Bottom view of the SPERAS ZT20 battery charger highlighting the universal 5V 2A USB Type-C input port
SPERAS ZT20 smart charger package contents including retail box, charging unit, USB cable, carrying pouch, and user manual
SPERAS ZT20 smart battery charger main profile showing the high-definition LCD screen and independent dual charging slots
SPERAS ZT20 charger actively charging two 18650 Li-ion batteries, with the smart LCD screen displaying voltage and capacity data
Bottom view of the SPERAS ZT20 battery charger highlighting the universal 5V 2A USB Type-C input port
SPERAS ZT20 smart charger package contents including retail box, charging unit, USB cable, carrying pouch, and user manual

SPERAS ZT20 Smart Battery Charger & Tester with LCD

$24.26
$24.26
Professional Battery Diagnostics SPERAS ZT20 Smart LCD Battery Charger & Tester Take complete control of your power. The SPERAS ZT20 goes beyond simple charging. Featuring a high-definition LCD screen, battery capacity testing, and over-discharged restoration capabilities, it is the ultimate management tool for all your essential Li-ion and Ni-MH/Ni-Cd batteries. Advanced Charging Technology Smart LCD & Broad Compatibility One charger for all your gear. The ZT20 is compatible with a wide range of batteries, including 21700, 26650, 18650, 16340, and 14500 Li-ion cells, as well as Ni-MH/Ni-Cd batteries. The intelligent system automatically detects the battery's voltage, while the crisp LCD...
Please hurry! Only 53 left in stock
Subtotal: $24.26

Free Shipping

Free shipping on all order above $49.99 to most countries.

Warranty

Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.

Note

Any questions, please email to info@sperasflashlight.com

 
SPERAS ZT20 smart battery charger main profile showing the high-definition LCD screen and independent dual charging slots

SPERAS ZT20 Smart Battery Charger & Tester with LCD

$24.26
SPERAS ZT20 smart battery charger main profile showing the high-definition LCD screen and independent dual charging slots
SPERAS ZT20 charger actively charging two 18650 Li-ion batteries, with the smart LCD screen displaying voltage and capacity data
Bottom view of the SPERAS ZT20 battery charger highlighting the universal 5V 2A USB Type-C input port
SPERAS ZT20 smart charger package contents including retail box, charging unit, USB cable, carrying pouch, and user manual

SPERAS ZT20 Smart Battery Charger & Tester with LCD

$24.26
Description
Professional Battery Diagnostics

SPERAS ZT20 Smart LCD Battery Charger & Tester

Take complete control of your power. The SPERAS ZT20 goes beyond simple charging. Featuring a high-definition LCD screen, battery capacity testing, and over-discharged restoration capabilities, it is the ultimate management tool for all your essential Li-ion and Ni-MH/Ni-Cd batteries.

SPERAS ZT20 smart battery charger main profile showing the high-definition LCD screen and independent dual charging slots

Advanced Charging Technology

Smart LCD & Broad Compatibility

One charger for all your gear. The ZT20 is compatible with a wide range of batteries, including 21700, 26650, 18650, 16340, and 14500 Li-ion cells, as well as Ni-MH/Ni-Cd batteries. The intelligent system automatically detects the battery's voltage, while the crisp LCD screen clearly displays real-time charging status, current, and exact battery capacity.

SPERAS ZT20 charger actively charging two 18650 Li-ion batteries, with the smart LCD screen displaying voltage and capacity data

Universal USB-C Input & Fast Charging

Powered by a modern 5V/2A Type-C input port, you can plug the ZT20 into wall adapters, car chargers, or power banks. It is capable of charging two batteries simultaneously while controlling each slot independently. It intelligently delivers a DC output of 4.2V at either 1A across two slots or a rapid 2A in a single slot.

Bottom view of the SPERAS ZT20 battery charger highlighting the universal 5V 2A USB Type-C input port

Safety & Battery Restoration

Protect your home and your equipment. The ZT20 features built-in reverse polarity protection and short circuit protection, alongside an excellent heat dissipation design to prevent overheating. Furthermore, it possesses an advanced Li-ion battery restoration feature, capable of activating and reviving over-discharged "dead" batteries.

Technical Specifications

  • USB Input: 5V/2A
  • DC Output: DC 4.2V / 1A * 2 OR 2A * 1
  • Compatible Batteries: 21700, 26650, 18650, 16340, 14500 Li-Ion, Ni-MH/Ni-Cd, etc.
  • Dimensions: 110mm (L) * 48.4mm (W) * 28.9mm (H)
  • Weight: 47.6g (net weight) / 126.5g (gross weight)
  • Special Features: Capacity testing, LCD display, over-discharged activation.

📦 What’s in the Box

  • 1 × SPERAS ZT20 Smart Charger
  • 1 × USB Charging Cable
  • 1 × Carrying Pouch
  • 1 × User Manual
SPERAS ZT20 smart charger package contents including retail box, charging unit, USB cable, carrying pouch, and user manual

Frequently Asked Questions

How does the battery capacity test work?

The ZT20 allows you to test the true capacity of your batteries, preventing you from using degraded cells. When in test mode, the charger intelligently cycles the battery to determine its actual mAh capacity, displaying the final accurate result right on the LCD screen.

Can I charge a large 26650 battery and a small 14500 at the same time?

Yes! The ZT20 features independent dual slots. The smart chip automatically detects the type and voltage of the battery inserted into each slot and adjusts the charging current accordingly, allowing you to safely mix and match different battery sizes and chemistries simultaneously.

What is the Li-ion battery restoration feature?

If you have a Li-ion battery that has been over-discharged (meaning its voltage dropped too low and it appears "dead"), standard chargers often cannot recognize it. The ZT20 applies a safe, low-current activation process to try and restore the battery's voltage back to normal charging levels, potentially saving your expensive batteries.

Enlarged view of SPERAS ZT20 charger
Manual Download

Related Products

Vendor
Example product title
$24.26
$24.26
Vendor
Example product title
$24.26
$24.26
Vendor
Example product title
$24.26
$24.26
Vendor
Example product title
$24.26
$24.26
Vendor
Example product title
$24.26
$24.26
Vendor
Example product title
$24.26
$24.26

Recently Viewed Products