Trojan J305-AGM battery for solar energy storage, rated 310Ah 6V

Quick answer: One code, one battery: Trojan J305-AGM, 310Ah 6V, for solar power systems. Measure twice, order once: dimensions decide most swaps.

Measurements, ratings and codes

Fitting and everyday care

A week of fog in the hills tests every solar battery bank. Add temperature compensation if the batteries live in a room that swings from hot to cold. A bank that runs out earlier each evening has lost capacity.

Trojan J305-AGM for solar power systems

Spotted Trojan J305-AGM on your installer's plan? That is the code to search. Built with AGM technology, it suits systems charged by the sun every day. Planning a bank is easier with every model's figures on one screen.

310Ah is right in the usual range for solar power systems.

Answers before you buy

Before you order: a quick checklist

• ✓ These are 5, 6, 15 terminals. Photograph the old ones before ordering to compare side by side.
• ✓ A different chemistry from AGM may need system changes.
• ✓ Dimensions to compare: 296 × 176 × 358 mm. Do not forget the base ledge, which the hold-down clamp grips on many vehicles.

Explore more

Keep the code J305-AGM handy for next time: it makes reordering at baterias.online quick. A minute spent comparing the label of your old battery avoids most mistakes.

• Other batteries for solar power systems
• The complete Trojan range

What AGM means for you

Many glass-mat designs tolerate sideways mounting, as long as the maker says so. Motorcycles benefit from glass-mat batteries because they tolerate lean angles and vibration. Over winter, a smart unit set to its AGM programme keeps a glass-mat battery healthy with no effort.