402626 320mAh High Voltage LiPo Battery

Why Choose LithoTop for High Voltage LiPo Battery Solutions?

High voltage LiPo batteries require more than a higher nominal voltage. To achieve reliable performance, the battery must control material stability, voltage consistency, internal resistance, thickness tolerance, cycle performance, charging compatibility, and protection circuit design. LithoTop supports customers from early sample testing to mass production with professional engineering support and strict production inspection.

For compact electronic products, LithoTop can help evaluate battery size, runtime target, charging voltage, working current, connector type, protection circuit, and real application conditions before confirming the final battery design. This helps customers reduce development risk and improve product reliability.

01 – Smart Health Wearable Project from Germany

A German healthcare electronics company was developing a small smart wearable device for daily health monitoring. The product needed to collect movement data, transmit information through Bluetooth, and operate for a full daily usage cycle. However, the available internal space was very limited, and the standard 3.7V battery they tested could not meet the expected runtime target.

The customer contacted LithoTop because they needed a compact high energy density battery rather than simply increasing the battery size. LithoTop reviewed the product enclosure, standby current, Bluetooth transmission current, charging circuit, expected runtime, and battery compartment tolerance.

After analysis, LithoTop recommended the 402626 3.8V 320mAh High Voltage LiPo Battery. Our engineering team judged that a high-voltage 3.8V platform could provide better usable energy within the same compact space, helping the customer improve runtime without redesigning the wearable housing.

During sample development, LithoTop optimized the wire length, connector type, PCM protection option, and cable outlet direction to match the customer’s assembly process. Sample testing included capacity verification, standby simulation, Bluetooth transmission pulse testing, charging compatibility testing, temperature monitoring, and installation fit checking.

Before mass production, both teams confirmed golden samples, battery dimensions, connector specifications, charging requirements, labeling details, and batch inspection standards. The final solution helped the wearable device achieve more stable daily runtime and improved user experience. For the customer, this reduced mechanical redesign pressure and supported a faster product launch.

02 – Bluetooth Smart Accessory Project from South Korea

A South Korean consumer electronics company was developing a compact Bluetooth smart accessory used for mobile device interaction and wireless control. The product needed to stay thin and lightweight, but it also required stable power during frequent Bluetooth connection and short transmission peaks. Their previous battery worked during basic testing, but runtime dropped quickly during real user simulation.

The customer approached LithoTop because they needed a battery manufacturer that could evaluate actual working conditions instead of only providing a standard battery model. LithoTop analyzed the accessory’s operating current, standby mode, Bluetooth connection interval, charging method, internal structure, and target market requirements.

Based on this evaluation, LithoTop recommended the 402626 3.8V 320mAh high voltage LiPo battery. The 320mAh capacity supported compact product design, while the 3.8V high-voltage platform helped improve available energy and maintain more stable performance during repeated wireless activity.

During prototype development, LithoTop adjusted the battery label, connector position, cable length, and outer insulation to support the customer’s assembly line. Sample batteries were tested through continuous Bluetooth operation, charge-discharge cycling, voltage stability checking, storage testing, and installation fit verification.

Before mass production, the customer confirmed the approved sample, electrical performance, packaging method, connector durability, and incoming inspection standard. LithoTop then controlled production according to the confirmed golden sample.

The final battery solution helped the Bluetooth accessory achieve longer operating time and fewer unexpected low-power shutdowns. For the customer, this improved product reliability, reduced after-sales complaints, and made the device more competitive in the compact smart accessory market.