The leagend BC821 is a 2-in-1 unit pairing an 8-step smart charger with a full battery tester, covering CCA, internal resistance, voltage, SOC/SOH and the vehicle's cranking and alternator charging systems. It charges at up to 8A with a smart unattended mode, a battery repair mode and automatic output reduction at high temperature. The Fn shortcut key is assignable to one-key quick charging, quick battery test or voltage mode.
8-STEP
SMART CHARGER
● Smart Unattended Mode, which can stay connected for a long time;
● Provides battery repair mode;
● The output power is automatically reduced when the charger temperature is too high;

BATTERY TESTER
● Test the CCA (cold cranking amps), internal resistance, voltage, state of charge, state of health;
● Test the vehicle cranking system and alternator charging system;
SHORTCUT KEY
The shortcut key “Fn” can be set to one-key quick charging, battery quick test or voltage mode
BUILT-IN FEATURES
● Built-in high and low temperature compensation mechanism;
● Built-in protection of overvoltage, overcurrent, overheat and reverse connection;
SPECIFICATIONS
Inquiry & Sample Request
Faqs
2. We respect our customers and are fully willing to grow together with them to achieve a win-win situation.
2.Small-batch trial orders are supported.
1. The customer provides the required drawings/detailed parameters.
2. The project is confirmed to be feasible.
3. A contract is signed with the customer and a deposit is paid.
4. Follow up on the customer's needs and make samples.
5. The customer tests and confirms the samples.
6. Mass production begins.
2.During the warranty period, we provide free repair and free firmware software updates.
2.If the defective rate exceeds the acceptable range based on the sampling inspection ratio, the factory shall re-produce the goods.
2.On-site factory visits require an appointment 7 working days in advance. We will arrange a dedicated person to receive you and provide a full tour of the production workshop, quality inspection process, warehousing and logistics. Video factory visits can be booked at any time and support bilingual explanations in Chinese and English.
2.Standard quotes are valid for 30 days, while quotes for customized products are valid for 15 days.