Which battery would be better?

ICS Hunter

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Which would be possibly the better battery to use in order to last the longest?  9 volt or 6 volt / 4 ah lead acid rechargeable?  The reason I ask is that where I work we change out these lead acid batteries regularly and replace them.  I am hooking it up to a ms20 pir sensor with low power mods and a timer board to space the pics out.  Just wondering.
 

ICS Hunter

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Is that for increased life expectancy ?  Wired in series as well?
 

ArkansasElkHunter

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With a 4ah 6 volt and the low power mods on the ms20 it should last about 5 years, 8 months 14 days and 19 hours.  That of course dosen't take leap year into consideration.   With the 9 volt it should last around 10 months, so it's up to you.  size and weight vs free and forever.  they will make a great back-up power source for the d370 though.   Rechargable!!
 


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