Hello all,

   It's time for me to choose a battery for my UlPower 260. I am trying to choose between Acid battery or Lithium. What are you guys using for your planes? What brand of battery would you guys recommend. I am also thinking of using 2 batteries for redundancy. What are your thoughts on that?

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We've been using two EarthX 680C batteries for several years with our Viking 130 engine, and they're great.  One easily starts the engine, but have two for redundancy.  They're pricy, but worth it.  While our batteries are not TSO'd, EarthX recently came out with the first ever TSO'd batteries for certified aircraft.   

Satisfied with my dual EarthX batteries/single alternator setup on the UL350iS.  I went dual battery for the increased Amp-Hr capacity in the event of transfomer rectifier issue and less stress on the batteries for cold weather starts.  Mounted on engine side of  firewall and so far, temp strips show that peak heat does not exceed recommended battery temperature operating range. With a ULP engine I would ensure you have a robust electrical system with either dual battery/single alternator or dual alternator/single battery setup.

I concur with Loren and David.  I have two 20C(believe newer designation is 680) EarthX's mounted on the engine firewall side of my Viking 110 powered 750 and have had no issues since 2015.

I also use the EarthX 680 batteries with my Viking 130 which were mounted firewall forward. After 2 years of use one of the batteries showed a fault and upon inspection the battery case had bulged. EarthX told me that was a sure sign of overheating. I bought new 680's and moved them behind the firewall.

Rather than installing two batteries I went with the next size up EarthX. Installed it on the cabin side of fire wall.

Also, replaced ULP (350i engine) regulator and wiring harness with a more robust version. 

Ralph

Hi Adam,

Not flying yet, but installed EarthX battery behind passengers seat, photos on my page this site. Look forward to hearing you are in the air.

Perry

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