# Solar battery Trojan 27-GEL 12V 91Ah GEL ![Solar battery Trojan 27-GEL 12V 91Ah GEL](https://baterias.com/691-home_default/battery-trojan-27-gel-12v.jpg) > Trojan 27-GEL solar battery 12V 91Ah GEL. Designed for PV systems with daily cyclic loads. 24 h delivery. **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-27-gel-12v - **Language**: en-GB - **Brand**: TROJAN - **Reference**: BCOM-TROJAN-27-GEL - **EAN**: 8404653001322 - **MPN**: 27-GEL - **Price**: 750,82 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | TROJAN | | Reference | 27-GEL | | Model | TROJAN GEL | | Voltaje | 12 V | | Largo | 324 mm | | Ancho | 171 mm | | Alto | 234 mm | | Peso | 29 kg | | Tecnología | GEL | | Terminal | 7 | | Capacidad C20 (Ah) | 91 Ah (c20) | | Capacidad C5 (Ah) | 76 Ah (c5) | ## Quick description **Trojan 27-GEL 12V 91Ah** 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 91 Ah C20 📏 Dimensions 324×171×234 mm ⚙️ Technology GEL ⚖️ Weight 29 kg 🏷️ Model Trojan GEL ## Description ## Battery Trojan 27-GEL 91Ah 12V The battery TROJAN 27-GEL 91Ah 12V GEL belongs to the range of batteries gel de trojan They are sealed batteries, maintenance free that provide a higher power in the most demanding applications of renewable energy and transport. The gel batteries of trojan contain gelified electrolyte designed and patented by trojan that offers consistent performance and drastically extends the life cycle of the batteries. ### Ideal for: - Renewable energy - Solar - Electric vehicles (golf carts and utilitarian vehicles) ### Battery advantages and characteristics TROJAN 27-GEL 91Ah 12V - Free of mantenimient - Spill -proof - Pressure relief device, optimized for high power density - Low internal resistance for a higher discharge current and greater load efficiency - Horizontal and vertical installation - Gel technology ### How to find the right battery for your vehicle or device? If you are not sure what drums you need, do not hesitate to contact us and we will be happy to advise you. ### Why choose a battery trojan? Choosing trojan batteries will be a success, because the trojan batteries are a reference in batteries for golf cars, batteries for elevators or batteries for cleaning machine. ### Know more about the trojan brand Trojan is the worldwide leader of deep cycle industrial batteries.It has liquid electrolyte, AGM and deep cycle gel batteries to meet the most demanding battery needs. Trojan batteries incorporate some important innovations, such as the exclusive T2 ™ Trojan Technology, the Alpha Plus® pasta, or the Maxguard® separator, to give maximum performance In addition, the Trojan engineering team has more than 200 years of combined experience in deep cycle batteries. If you want additional information about Battery Trojan 27-GEL, you can download the product's technical sheet at the following link: [ Download technical sheet Trojan 27-GEL 91Ah 12V](/fichastecnicas/data-sheet-battery-trojan-27-gel-91ah-12v-en.pdf) ## Frequently asked questions ### Is the 27-GEL model a gel battery? Where is it used? Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years. ### How do I verify this battery is the right one? Three ways: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team for the 27-GEL; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 9:00–18:00 CET). ### How is the Trojan 27-GEL 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 this page. 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. ### How many years of warranty does the 27-GEL model cover? We provide 2 years of official manufacturer warranty against manufacturing defects. It covers cell failures, internal short-circuits and abnormal capacity drops. Wear from misuse (prolonged overcharging, wrong charger or faulty alternator) is not covered. Once the defect is verified by technical inspection, we replace the 27-GEL at no cost. ### How long does Trojan 27-GEL delivery take? In mainland Spain and Portugal it arrives in 24 h if you order before 17:00 and the battery is in stock — it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships. ### How do I return the 27-GEL model if it doesn't fit? Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE — we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period. ### What is the price of the 27-GEL model? The current price at baterias.com is 750,82 € (VAT included; 620,51 € excl. VAT), updated every 24 hours. The applicable VAT may vary with the destination country and is confirmed in the cart. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). ### Where can I buy the Trojan 27-GEL battery? At baterias.com — authorised distributor with real stock, 24h delivery in mainland Spain and Portugal if you order before 17:00, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point. ### How long does the Trojan 27-GEL battery last? Expected lifespan of the Trojan 27-GEL is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. 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 27-GEL battery? Dimensions (length × width × height) are 324×171×234 mm — also written as 324x171x234 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. ### How much does the Trojan 27-GEL battery weigh? It weighs 29 kg. Most of the weight is lead. If you plan to fit it yourself, use gloves and a carrying strap (AGM batteries are slightly heavier than conventional due to the absorbent glass-mat fibre). ### How many Ah and CCA does this battery have? Nominal capacity 91 Ah[?cca: and [cold-cranking amps A]] at 12 V. Ah measure the total energy available (autonomy); CCA (also written A in cold or EN under the European standard) measure the instantaneous power to crank the starter motor. A battery with more CCA starts better in winter; one with more Ah keeps accessories on for longer. ### Which batteries are equivalent to the Trojan 27-GEL? 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. ### Is the 27-GEL model better than its equivalents from other brands? This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section. ### What real-world experiences are there with this battery? The average rating of the Trojan 27-GEL on baterias.com is 4.9/5 from 7 verified customer reviews. The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.4/5 from 10,548+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped devices that need OBD registration after fitting. ## Reviews - **Average rating**: 4.9 / 5 (7 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-07-12*