Function and Features
- Alarm parameters can be set individually for each device
- Record the track, cost and driving habits of each trip, can export to Excel file
- Record the parking position automatically and provide the CAR FINDER function through navigation
- Store historical data in device up to 72 days (voltage, charge percentage and temperature). Save the data every 2 minutes
- The historical data will not be lost when the device loses power
- The storage of historical data in the app is unlimited.
- Free app download, free firmware upgrade
- Waterproof IP67
- The battery can be customized, and the voltage value corresponding to the percentage of battery power can be defined
- Real-time display battery power, temperature and voltage
- Support 24V/12V/6V lead-acid batteries and lithium batteries, work for trucks, cars, motorcycles, boats, energy storage batteries
- Send alarm notification if the battery is abnormal
- Support 24V/12V startup system and charging system test
- Support multi-device management, four devices can be monitored at the same page
Application | All 24V/12V/6V lead-acid and lithium batteries |
Average Operating Current | 1mA |
Input Voltage | 3V~35V |
Operating Temperature | -30ºC~85ºC (-22ºF~185ºF) |
Voltage Accuracy | ±0.03V |









We provide straightforward packaging solutions with customizable options to suit your specific preferences, guaranteeing that your product is delivered safely and attractively..

Established in 2005, Shenzhen Leagend Optoelectronics Co., Ltd. stands as a trailblazer in battery monitoring and testing technology. We seamlessly blend design, R&D, production, sales, and service. Our expansive 3,000 square meter facility is dedicated to maintaining the utmost quality standards, in strict accordance with ISO9001 regulations. Boasting over 13 years of esteemed OEM experience, we ensure every product undergoes an 8-hour aging test. Welcoming both OEM and ODM orders, our customer service team is prepared to cater to any sourcing requirements, guaranteeing your needs are met with unrivaled excellence.


A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent,
we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What are your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages
before you pay the balance.
Q3. What are your terms of delivery?
A: EXW, FOB, CFR, CIF, DDU.
Q4. How about your delivery time?
A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends
on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and
the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive prices to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them,
no matter where they come from.