Battery Service; Table 2-8 Battery State Table; Table 2-9 Battery Level Table - TELink TLSR827 Series Manual

RECONNECT_ADV_INTERVAL_MIN
RECONNECT_ADV_INTERVAL_MAX

2.7 Battery Service

Battery detection is implemented with the interval of 100ms.
If the battery voltage has dropped below 2.0v, the RCU will enter deep sleep mode.
Battery State
WARNING
Note

When the battery voltage is 2.0~2.1V, the red LED of the RCU will blink five times.

When the battery voltage is 2.0~2.1V, the RCU allows OTA, but does not support Pairing/Un-
pairing/FW version check, and all keys do not work.

When the battery voltage drops below 2V, the RCU disables OTA function.

The battery voltage detected via ADC may have about 50mV deviation.
Actual Voltage at the chip
2.9 V ≤ VDD ≤ 3.3 V
PS-20033000-E1
Parameter

Table 2-8 Battery state table

GOOD
DEAD

Table 2-9 Battery level table

Spec For TLSR827x-based BLE Audio Remote Control
Value
30 ms
35 ms
Battery Voltage (V)
2.1 < V ≤ 3.3
2.0 ≤ V ≤ 2.1
V < 2.0
Report sent in terms of percentage
100%
21 Ver.0.1.0