The First Capacity Tester for 1.5V Lithium Batteries. It has a wide range of uses and supports charging of various types of batteries. AA/AAA 1.5V Li-ion batteries to 10440-21700 3.6/3.7V Li-ion batteries, AAA/AA/A/SC 1.2V Ni-MH batteries, 3.2V LiFePO4 batteries
XTAR VX4 Visible Mixer – Know the Real Capacity for 1.5V Lithium Batteries
As 1.5V lithium-ion batteries become more popular, many people are using them in different devices. Therefore, they may want to test the capacity of these batteries to ensure their performance meets expectations. Unfortunately, regular battery chargers often do not provide this functionality.
To meet this need, XTAR has launched its latest charger, the VX4 Visible Mixer. It’s the first capacity tester designed specifically for rechargeable 1.5V Li-ion batteries.
FAQ about XTAR VX4 Battery Charger
1. How is the capacity grading accuracy of VX4 charger?
The VX4 charger uses a 300mA discharge current to test battery capacity. Compared with a professional capacity grading machine, its energy and capacity test accuracy is more than 95%. Under the comparison test of the XTAR lab, with the same test condition, a randomly picked XTAR 1.5V AA 1200mWh battery had real capacity 1161mWh by VX4 charger, and 1129mWh by capacity grading machine. The accuracy error between them is less than 3%.
2. Why does VX4 design capacity grading function for 1.5V rechargeable Li-ion batteries?
As a new generation type, 1.5V AA and AAA rechargeable Li-ion batteries are less common in the market than the regular disposable alkaline and 1.2V NiMH batteries. While the manufacturers becomes more and more, resulting in varying quality and chaotic market. As a leader in the cylindrical lithium battery industry, XTAR has always been at the forefront of technological innovation. We aim to help users easily identify overrated battery and lead the industry toward high-quality and standardization.
3. For 3.6/3.7V Li-ion battery, would the set of 2.5V discharge cut-off voltage cause a over-discharging?
No, it won't. According to the international testing standard IEC 61960-3 2017, the discharge cut-off voltage for 3.6/3.7V Li-ion batteries is 2.5V.
4. What effect does a battery with high internal resistance have on capacity testing?
Higher internal resistance restricts current flow, resulting in poor discharge performance. It also consumes some energy. With high internal resistance, the heat loss increases, thereby reducing the battery's usable capacity.
5. When grading the XTAR 1.5V AA 4150mWh battery, why is the capacity value lower than claimed rating?
The labeling standard for the nominal energy of XTAR AA 4150mWh and AAA 1620mWh battery is: the energy comes from the cell energy before loss, and the capacity comes from the real measurement at 1.5V output. Due to the cell has 10% output loss, the battery capacity measured by VX4 charger is the output capacity after loss.
The advantage of using the 3.6V cell’s energy as the battery nominal energy is it helps avoid significant fluctuations in energy output due to conversion efficiency. First, the conversion efficiency of constant voltage step-down circuits will improve with industry advancements. Second, there are significant differences in conversion efficiency among different step-down circuits. For example, the conversion efficiencies of the constant voltage step-down circuit is 90%, while that of the linear step-down circuit is only 80%.
The Widest Compatibility for Most Popular Batteries
The VX4 is extremely versatile and supports a variety of battery types and sizes. From AA/AAA 1.5V Li-ion batteries to 10440-21700 3.6/3.7V Li-ion batteries, and even AAA/AA/A/SC 1.2V Ni-MH batteries, it is equipped to handle them all easily.
In addition to the standard charging modes, the VX4 also offers a LiFePO4 mode to charge 3.2V LiFePO4 batteries. This flexible charging feature caters to the different needs of users.
The First Capacity Tester for 1.5V Lithium Batteries
This feature can help you detect exaggerated capacity ratings in new batteries and evaluate the remaining performance after battery aging, helping you in timely replacements. VX4 can test the capacity of popular batteries on the market, and it also offers a breakthrough feature: the ability to test the capacity of rechargeable 1.5V Li-ion batteries. Equipped with a LCD screen, it offers users a clear view of charging status, empowering better control over the charging process. Together with VX4, managing charging becomes worry-free.
That’s not all. After completing the capacity test, just click the “mAh/mWh” button to switch directly to energy display in mWh, providing a more intuitive capacity representation. It has been proven that this feature is particularly convenient for devices with specific energy requirements, ensuring batteries are optimally utilized.
Smart Charging Process Making Charging Easier
You just insert in the battery and let the charger do the rest.
1) With a USB-C input port, it is versatile for charging anywhere. Coupled with a 20W PD adapter, a single slot can reach a maximum of 3A charging current and fast charge a 26650 6000mAh battery in 3.3 hours, significantly reducing wait times.
2) VX4 automatically matchs the optimal charging current based on various factors like battery, quantity and internal resistance. For users seeking more control, we’ve added a manual current selection function . This gives more options and improving the overall experience.
3) Unique CVSA tech for Ni-MH batteries and the 3-stage charging method for Li-ion batteries, it ensures higher accuracy of full-charge detection, faster charging, and extend battery life.
Safety Design and Low Voltage Activation
Aside from charging and capacity testing functions, VX4 also boasts higher activation rate for over-discharged batteries, saving money and energy. It also features multiple protection mechanisms to prevent overcharging, over-current, and other potential risks.
With the increasing popularity of 1.5V lithium batteries, the need for accurate capacity testing and wide compatibility has become critical. With VX4 Visible Mixer, you can say goodbye to batteries with unknown performance and hello to a more reliable charging solution.
