Trojan

Trojan 27-GEL · Solar battery 12V 91Ah

Reference: BOL-TROJAN-27-GEL · EAN 8404653001322

Trojan 27-GEL: solar battery with 12 V and 91 Ah, measuring 324 × 171 × 234 mm.

Where the Trojan 27-GEL fits

The Trojan 27-GEL 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 27-GEL belongs to the Trojan TROJAN GEL range. The full range of Trojan batteries

Inside the 27-GEL: GEL technology

The 27-GEL is a gel battery: the electrolyte is immobilised in silica gel. It requires a charger with a specific gel profile.

Trojan 27-GEL vs 31-GEL and 24-GEL

What sets the 27-GEL apart from its neighbours in the Trojan range:

ModelCapacityDimensions (mm)Weight
Trojan 27-GEL (this one)91 Ah324 × 171 × 23429 kg
Trojan 31-GEL102 Ah329 × 171 × 24532 kg
Trojan 24-GEL77 Ah276 × 171 × 23624 kg
  • Trojan 31-GEL: 11 Ah more, a different case (329 × 171 × 245 mm).
  • Trojan 24-GEL: 14 Ah less, a different case (276 × 171 × 236 mm).

Equivalents and alternatives to the Trojan 27-GEL

No other reference in the catalogue fully matches the dimensions and polarity of the 27-GEL; you will find the closest ones among our solar batteries for off-grid systems.

Trojan 27-GEL codes and part numbers

The 27-GEL is listed under these codes on labels, in garages and in catalogues:

Commercial reference27-GEL
EAN8404653001322
Not to be confused withTrojan 24-GEL (77 Ah)

What to look at before buying the 27-GEL

  • Capacity of the 27-GEL: 91 Ah; the same as your current battery or slightly more is fine.
  • Measure the space: the 27-GEL takes up 324 × 171 × 234 mm.

Frequently asked questions about the Trojan 27-GEL

Trojan 27-GEL or 31-GEL?

Compared with the 27-GEL, the Trojan 31-GEL has 11 Ah more. With 102 Ah, the 31-GEL runs longer between charges than the 27-GEL (91 Ah). Mind the space: the 31-GEL measures 329 × 171 × 245 mm.

How much does the Trojan 27-GEL weigh?

The 27-GEL weighs 29 kg. For reference, the Trojan 31-GEL (102 Ah) weighs 32 kg.

Which charger does the Trojan 27-GEL need?

A charger with a GEL mode not exceeding 14.1-14.4 V. Charging it with a conventional lead-acid profile damages it through overcharging.

More batteries to compare with the 27-GEL

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