# Solar battery Trojan J185-AGM 12V 200Ah AGM ![Solar battery Trojan J185-AGM 12V 200Ah AGM](https://baterias.com/676-home_default/battery-trojan-j185-agm-12v-389a.jpg) > Trojan J185-AGM solar battery 12V 200Ah AGM. AGM RELIANT range. Dimensions 380×176×367 mm. Designed for PV systems with daily cyclic loads. **Category:** [Batteries for Solar Applications](https://baterias.com/gb/batteries-for-solar-applications) → [TROJAN](https://baterias.com/gb/trojan) - **Canonical URL**: https://baterias.com/gb/battery-trojan-j185-agm-12v-389a - **Language**: en-GB - **Brand**: TROJAN - **Reference**: BCOM-TROJAN-J185-AGM - **MPN**: J185-AGM - **Price**: 1.086,30 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | TROJAN | | Reference | J185-AGM | | Model | TROJAN AGM RELIANT | | Voltage (V) | 12 V | | Largo | 380 mm | | Ancho | 176 mm | | Alto | 367 mm | | Peso | 57 kg | | Tecnología | AGM | | Terminal type | 5 6 15 | | Capacity (C20) | 200 Ah (c20) | | Capacity (C5) | 157 Ah (c5) | ## Quick description **Trojan J185-AGM 12V 200Ah** 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 systems** optimised for daily charge/discharge cycles - **Handles extreme temperatures** in technical rooms or outdoor installs - **Minimal self-discharge** when left idle over winter or holidays 🔌 Voltage 12 V ⚡ Capacity 200 Ah C20 📏 Dimensions 380×176×367 mm ⚙️ Technology AGM ⚖️ Weight 57 kg 🏷️ Model TROJAN AGM RELIANT ## Description ## Solar battery Trojan J185-AGM AGM Reliant 200Ah 12V 12*V* Voltage 200*Ah* Capacity 57*kg* Weight The **12 V**, **200 Ah** **Trojan J185-AGM** solar battery from the **AGM Reliant** range with AGM technology is designed for off-grid photovoltaic installations and storage systems. It measures 380 × 176 × 367 mm, the format sought by anyone replacing a 200 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. ### Dimensions, polarity and mounting In terms of format, the Trojan J185-AGM measures 380 × 176 × 367 mm (length × width × height) and weighs 57 kg. It uses 5 6 15 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### What the Trojan J185-AGM is for With 200 Ah, the Trojan J185-AGM stores the energy from your panels for the night and cloudy days. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 57 kg and 5 6 15 terminals. ### The Trojan J185-AGM: AGM Reliant range and AGM technology The J185-AGM is part of the Trojan **AGM Reliant** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### What Trojan does differently Founded in 1925 in California, Trojan invented the golf cart battery and remains the standard in deep-discharge applications that demand thousands of cycles. All the Trojan batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Official warranty The Trojan J185-AGM 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. ### How to make it last longer Size the installation so as not to discharge the battery more than 50% daily and set the controller to the battery technology. In the darker months, check the voltage periodically and avoid full discharges. ### Shipping, delivery and returns Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is the Trojan J185-AGM an AGM battery and what are the benefits of AGM? Yes. The J185-AGM 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 J185-AGM 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 J185-AGM model? Expected lifespan of the Trojan J185-AGM 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 J185-AGM battery? Dimensions (length × width × height) are 380×176×367 mm — also written as 380x176x367 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. ### What are the equivalents of the J185-AGM model? 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-14*