Trojan

Trojan T1275-AGM · Solar battery 12V 140Ah

Reference: BOL-TROJAN-T1275-AGM

The Trojan T1275-AGM is a solar battery with 12 V and 140 Ah, measuring 329 × 179 × 278 mm.

Where the Trojan T1275-AGM fits

The Trojan T1275-AGM is a deep-cycle battery for off-grid solar systems: it stores the day's energy for use at night and withstands years of charge and discharge cycles. Its capacity is rated at 20 hours (C20); at slower discharge rates the usable capacity is higher.

The T1275-AGM belongs to the Trojan TROJAN AGM RELIANT range. See all Trojan batteries

Equivalents and alternatives to the Trojan T1275-AGM

As the T1275-AGM is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

ModelTechnologyCapacityDimensions (mm)
Trojan SAGM 12 135AGM135 Ah329 × 179 × 278
Trojan SAES 12 135AGM134 Ah329 × 179 × 278

Trojan T1275-AGM vs SAGM 12 135 and SAES 12 135: which one to choose?

Torn between the T1275-AGM and another similar Trojan? This is what changes:

ModelCapacityDimensions (mm)Weight
Trojan T1275-AGM (this one)140 Ah329 × 179 × 27837 kg
Trojan SAGM 12 135135 Ah329 × 179 × 27838 kg
Trojan SAES 12 135134 Ah329 × 179 × 27839 kg
  • Trojan SAGM 12 135: 5 Ah less, the same dimensions.
  • Trojan SAES 12 135: 6 Ah less, the same dimensions.

What it means that the T1275-AGM is AGM

The T1275-AGM is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

Check this before ordering the Trojan T1275-AGM

  • Length, width and height of the T1275-AGM: 329 × 179 × 278 mm.
  • With 140 Ah, the T1275-AGM replaces an original battery of that capacity or slightly less.

Trojan T1275-AGM codes and part numbers

The T1275-AGM is listed under these codes on labels, in garages and in catalogues:

Commercial referenceT1275-AGM
Terminal type5, 8, 15

Frequently asked questions about the Trojan T1275-AGM

Trojan T1275-AGM or SAGM 12 135?

Compared with the T1275-AGM, the Trojan SAGM 12 135 has 5 Ah less. With 140 Ah, the T1275-AGM runs longer between charges than the SAGM 12 135 (135 Ah). Both measure 329 × 179 × 278 mm, so they fit the same tray.

How much does the Trojan T1275-AGM weigh?

The T1275-AGM weighs 37 kg. For reference, the Trojan SAGM 12 135 (135 Ah) weighs 38 kg.

Which battery is equivalent to the Trojan T1275-AGM?

Only other AGM batteries with its dimensions and polarity: Trojan SAGM 12 135 and Trojan SAES 12 135. Neither an EFB nor a conventional battery replaces the T1275-AGM.

How far can I discharge the Trojan T1275-AGM each day?

To make it last years, do not go below 50% routinely. Size the bank so daily consumption is half the installed capacity.

Keep comparing: alternatives to the T1275-AGM

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