S1000Li - Lithium-Ion Battery Powered Slim Acoustic Modem

The Popoto Modem S1000Li is a compact and self-powered underwater acoustic modem that brings reliability, performance, and flexibility to subsea communication. Equipped with an integrated 22.2 V, 2500 mAh lithium-ion battery, it delivers a fully self-contained solution for deployments where external power is not practical. Its rugged machined aluminum housing, depth-rated to 1000 m, ensures dependable operation in even the most challenging environments.

Supporting multiple modulation schemes with data rates from 80 bps up to 10,240 bps, the S1000Li provides versatile communication options across a range of conditions, with typical ranges of up to 4 km (depending on modulation scheme and environmental conditions). A high-power transmitter outputs up to 175–180 dB re 1 µPa @ 1 m, while advanced two-way acoustic ranging delivers <0.3 m accuracy, enabling both reliable data transfer and precise positioning.

Integration is effortless with support for Python, MATLAB®, C++, and JSON APIs, along with a full suite of interfaces: Ethernet, RS-232, RS-422, SPI, I²C, GPIO, and analog inputs. The onboard ARM9 processor running Linux allows custom applications, while 128 GB of microSD storage provides generous logging for baseband and passband waveform capture.

Despite its slim profile (376 mm × 49 mm × 49 mm) and manageable weight (1220 g dry / 550 g in water), the S1000Li delivers the power, accuracy, and portability demanded by today’s ocean engineers, researchers, and IoT innovators. It’s the ideal choice for systems where compactness and self-sufficiency are critical.