Trojan SAGM 12 135 · Solar battery 12V 135Ah AGM
Specifications
| Brand | TROJAN |
|---|---|
| Part number | SAGM 12 135 |
| Voltage (V) | 12 |
| Capacity (C20) | 135Ah (c20) |
| Capacity (C10) | 131Ah (c10) |
| Technology | AGM |
| Length | 329.00 mm |
| Width | 179.00 mm |
| Height | 278.00 mm |
Trojan SAGM 12 135 12V 135Ah is a solar battery designed for PV systems with daily charge/discharge cycles. Tolerates extreme temperatures well, with low self-discharge during winter shutdowns or between stays at vacation homes.
Why this solar battery?
- Designed for solar systemsoptimised for daily charge/discharge cycles
- Handles extreme temperaturesin technical rooms or outdoor installs
- Minimal self-dischargewhen left idle over winter or holidays

Solar battery Trojan SAGM 12 135 Solar AGM - 1700 Ciclos 50% DOD 135Ah 12V
The 12 V, 135 Ah Trojan SAGM 12 135 solar battery from the Solar AGM - 1700 Ciclos 50% DOD range with AGM technology is designed for off-grid photovoltaic installations and storage systems. It measures 329 × 179 × 278 mm, the format sought by anyone replacing a 135 Ah battery in off-grid PV systems.
- Optimised for daily charge and discharge cycles.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Long life on float and moderate cycling.
- Good tolerance to extreme temperatures.
What the Trojan SAGM 12 135 is for
Designed for off-grid photovoltaic installations and storage systems, the Trojan SAGM 12 135 tolerates extreme temperatures and long periods of low activity. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 38 kg.
The Trojan SAGM 12 135: Solar AGM - 1700 Ciclos 50% DOD range and AGM technology
The SAGM 12 135 is part of the Trojan Solar AGM - 1700 Ciclos 50% DOD range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.
Size, terminals and hold-down of the Trojan SAGM 12 135
The Trojan SAGM 12 135 is made in the 329 × 179 × 278 mm format and weighs 38 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
What Trojan does differently
Trojan Battery is the world reference in deep-cycle batteries: golf carts, cleaning machines, aerial platforms and solar systems rely on its T2 technology and longevity. We guarantee that every Trojan arrives new, charged and with the manufacturer's full warranty.
Care and maintenance
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. In the darker months, check the voltage periodically and avoid full discharges.
Warranty and coverage
The Trojan SAGM 12 135 comes with the manufacturer's official warranty against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.
Delivery times and returns
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
Data sheet
-
BrandTROJAN
-
ReferenceSAGM 12 135
-
ModelTROJAN SOLAR AGM - 1700 CYCLES 50% DOD
-
Voltage (V)12
-
Length329.00 mm
-
Width179.00 mm
-
Height278.00 mm
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Weight38 Kgs
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TechnologyAGM
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Capacity (C20)135Ah (c20)
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Capacity (C10)131Ah (c10)
Specific References
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MPNSAGM 12 135
Recommended accessories
Compatible vehicles
The Trojan SAGM 12 135 fits 3 vehicles. Most searched below:
See all 3 compatible vehiclesFrequently asked questions
Is this battery AGM? What is it for?
Yes. The SAGM 12 135 from Trojan uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How is the Trojan SAGM 12 135 battery installed in the vehicle?
In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
What is the service life of the SAGM 12 135 model?
Expected lifespan of the Trojan SAGM 12 135 is 5 to 8 years in mild-climate device use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the dimensions of the Trojan SAGM 12 135 battery?
Dimensions (length × width × height) are 329×179×278 mm — also written as 329x179x278 mm — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Which batteries are equivalent to the Trojan SAGM 12 135?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level.
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