Both of mine were made in China, mine are the smaller ones that I use to power a camera that won't draw enough current to keep other batteries from shutting down.

Can you connect 2 units together for double the charge ?

Hello - if you mean double the capacity, we would suggest using the V50 - https://www.amazon.com/Voltaic-Systems-Always-External-Battery/dp/B00XZ7YU4M/ If you mean double the current (4A), it is possible with something like this "splitter" cable - https://www.amazon.com/HIGHROCK-Enhancer-Female-Charge-Extension/dp/B00NIGO4NM/r

How do you know when it's fully charged ?

If connected to a power source like USB or a 5 or 6 Volt solar panel, the lights will blink when charging. When fully charged, all 4 LEDs will turn solid.

Can I plug in into a wall outlet & keep drawing power from it always? I do not have any solar need. Any other product recommendation for my purposes?

Yes, the V25 has "pass through charging." It can accept a full charge and discharge at the full rate at the same time. If your power shuts off, there is no lag in power to your device. Customers do use it as a UPS.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

V25

Product ID: 582732962

Details

Battery Capacity
6700 Milliamp
Brand
Voltaic
Color
Silver
Connector Type
USB Type C
Special Feature
Always On

⚡5V/2A output

🌞Solar optimized cells

🔋6,400mAh capacity

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

¥16290

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Description

🔌 Power your adventures, never miss a moment!

DUAL OUTPUT - Charge two devices simultaneously with 3A max output.
SOLAR READY - Harness the sun's energy with high-quality Li-ion cells.
POWER UP ANYWHERE - Stay charged with 1.5 smartphone charges on the go!
ALWAYS ON CONVENIENCE - Perfect for sensors and time-lapse applications.
VERSATILE COMPATIBILITY - Works seamlessly with iPhone, iPad, Samsung, and more.

The V25 6,400mAh USB Always On Battery Backup Power Bank is designed for the modern professional, providing reliable power for smartphones and tablets. With solar-optimized Li-ion cells, dual output capabilities, and an 'Always On' feature, this power bank ensures you stay connected and charged, no matter where your day takes you.

Specifications

ASIN	B07ZS3WYZY
Amperage	2 Amps
Antenna Location	Solar Devices
Battery Capacity	6700 Milliamp Hours
Battery Cell Type	Lithium Ion
Battery Weight	230 Grams
Best Sellers Rank	#150,437 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1,890 in Cell Phone Portable Power Banks
Brand	Voltaic Systems
Color	Silver
Compatible Devices	Arduino, Hearing Aid, Raspberry Pi, Smartphone
Connector Type	USB Type C
Customer Reviews	4.5 out of 5 stars 174 Reviews
Item Dimensions	3.15 x 3.22 x 0.95 inches
Item Dimensions L x W x Thickness	3.15"L x 3.22"W x 0.95"Th
Manufacturer	Voltaic Systems
Mfr Part Number	V25
Model Number	V25
Number of Batteries	1 Nonstandard Battery batteries required.
Number of Items	1
Number of Ports	5
Other Special Features of the Product	Always On, Solar Charging
Power Source	Solar Powered
Reusability	Rechargeable
Special Feature	Always On, Solar Charging
Unit Count	1.0 Count
Voltage	5 Volts
Warranty Description	1 Year Manufacturer

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

¥16290

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews