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1S 8S 18650 LIPO BATTERY CAPACITY INDICATOR
1S–8S 18650 LiPo battery capacity indicator—monitor voltage and charge level for Li-ion/LiPo battery packs.
The 1S–8S 18650 LiPo Battery Capacity Indicator is a compact and versatile device designed to monitor the voltage and charge level of lithium-ion and LiPo battery packs from 1 to 8 cells (1S–8S). It provides real-time information on battery capacity, voltage, and health, helping prevent overcharging, over-discharging, and extending battery lifespan.
This indicator is ideal for DIY battery packs, drones, RC vehicles, portable electronics, Arduino/ESP32 projects, and power banks. Featuring a clear display and simple connection, it allows hobbyists and professionals to quickly assess battery status and make informed decisions about charging or maintenance.

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Text to Speech TTL Module (Serial to Speech)
- Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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Text support rate is better
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Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Voice effect optimization
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Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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