Trojan SIND 04 1685 · 1293Ah 4V · deep-cycle storage for photovoltaics

In short: Need a battery for solar power systems? Consider the Trojan SIND 04 1685, rated 1293Ah 4V. Technology matters here: it is a lead-acid battery.

Trojan SIND 04 1685: what it is and who it suits

Owners of holiday homes off the grid often come looking for the Trojan SIND 04 1685 when the old bank starts to fade. Built with lead-acid technology, it suits systems charged by the sun every day. Buying batteries online lets you compare capacities calmly before committing to a bank.

1293Ah sits towards the top of the range for solar power systems.

Quick compatibility checklist

• ✓ Stored energy reserve: 1293Ah. Going much lower than your current battery can leave you short on cold mornings or long stops.
• ✓ Chemistry: lead-acid. Some vehicles and chargers are programmed for a specific type, so check before swapping.
• ✓ Measure the space available: the case takes up 567 × 261 × 610 mm, and a few millimetres too many can stop the hold-down from closing.

Specifications table

Common questions about the Trojan SIND 04 1685

lead-acid: how it works

Plates made of lead and lead dioxide react with the acid. Simple design makes flooded batteries easy to recycle. Keep a flooded battery charged in cold weather.

See also

Codes matching and measurements agreeing? The Trojan SIND 04 1685 can go straight into your basket at baterias.online. If the terminal side or size differ, browse the alternatives before ordering.

• Other batteries for solar power systems
• More from Trojan

Trojan SIND 04 1685 in everyday use

A holiday cabin opened in spring often finds its bank half empty. Read the resting voltage of each battery once a month and note it down. Leaving the controller on the wrong chemistry setting shortens battery life quietly.