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I'm not sure that's really an indication of hand soldering. I worked as a quality control inspector at an SMD fab for a while, and that assembly looks better than some of the things I saw come off the line. There's a big book on tolerances in SMD manufacturing, which outlines how much alignment error is permissible for the three classes of manufacturing (most commercial is class 2, and military/aerospace is class 3) and if memory serves, even class 3 permits a 25% offset error and a 25% rotation error on 2-pin devices.
The "backup battery" on the back of the GPS module looks to me like a super-capacitor. These are usually used on GPS's to maintain the contents of the SRAM when the unit is powered down. Maintaining the SRAM means that the GPS gets a lock much faster (See GPS warm-start) when powered back up again. This combined with a power gating circuit will mean that the device can last much longer.
Media vez obtengan, podras ver un gráfico de la reputación que han obtenido con el tiempo.
Aquí está una vista previa de cómo lucirá el gráfico:
Aún no has no adquirido reputación.