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FJR Motorcycle Forums
Technical & Mechanical Problems
Battery Tender
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<blockquote data-quote="RaYzerman19" data-source="post: 1285223" data-attributes="member: 18388"><p>I also had concerns over the VRLA battery statement in the GenIII owner manuals. While VRLA includes AGM and Gel batteries, my research left it unclear whether the older Gens' AGM batteries were actually VRLA, ie, were sealed tight and had a valve. The GenIII batteries apparently do, and require a constant voltage charger. The sealed state will keep vapours in, and the valve will release gases if the internal pressure gets too high. When asked, Deltran said "Our charger will hold your battery at a constant voltage between 13.4-13.8 voltage at about a tenth of an amp. That is the constant voltage". Optimate on the other hand, overtly states theirs are good for VRLA.</p><p></p><p>It also important that your charger of choice does not have a desulphation mode, which boosts voltage for a period, i.e., it is not a constant voltage charger. Deltran does not have desulphation mode, BTW.</p></blockquote><p></p>
[QUOTE="RaYzerman19, post: 1285223, member: 18388"] I also had concerns over the VRLA battery statement in the GenIII owner manuals. While VRLA includes AGM and Gel batteries, my research left it unclear whether the older Gens' AGM batteries were actually VRLA, ie, were sealed tight and had a valve. The GenIII batteries apparently do, and require a constant voltage charger. The sealed state will keep vapours in, and the valve will release gases if the internal pressure gets too high. When asked, Deltran said "Our charger will hold your battery at a constant voltage between 13.4-13.8 voltage at about a tenth of an amp. That is the constant voltage". Optimate on the other hand, overtly states theirs are good for VRLA. It also important that your charger of choice does not have a desulphation mode, which boosts voltage for a period, i.e., it is not a constant voltage charger. Deltran does not have desulphation mode, BTW. [/QUOTE]
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