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Fahim, if you observe within range of a power point get a 12 volt power supply in lieu of (or as well as) a battery (even a 7Ah battery will give several hours of use). Jaycar have some good switch mode supplies at reasonable prices. For what it's worth I don't bother using the LNT or auto align, I level and align north manually then use 2 star alignment, it's more accurate.
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