The keyboard PCB and case have been modified, and a 0.99-inch 40x160 LCD screen has been added. The battery voltage/temperature/chip temperature/charging current/discharging current are initially displayed. The battery capacity function needs to be further added. These are all tests on a single 10000mAh battery, and two batteries have not been connected in parallel. This may be a task that needs to be considered for safety.
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