# 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. Dimensions 324×171×234 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-27-gel-12v - **Language**: en-GB - **Brand**: TROJAN - **Reference**: BCOM-TROJAN-27-GEL - **EAN**: 8404653001322 - **MPN**: 27-GEL - **Price**: 751,50 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | TROJAN | | Reference | 27-GEL | | Model | TROJAN GEL | | Voltage (V) | 12 V | | Largo | 324 mm | | Ancho | 171 mm | | Alto | 234 mm | | Peso | 29 kg | | Tecnología | GEL | | Terminal type | 7 | | Capacity (C20) | 91 Ah (c20) | | Capacity (C5) | 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 ## Solar battery Trojan 27-GEL 91Ah 12V 12*V* Voltage 91*Ah* Capacity 29*kg* Weight For off-grid photovoltaic installations and storage systems, the **Trojan 27-GEL** stores **91 Ah** with GEL technology through daily charge and discharge cycles. It measures 324 × 171 × 234 mm, the format sought by anyone replacing a 91 Ah battery in off-grid PV systems. - Long life on float and moderate cycling. - Good tolerance to extreme temperatures. - Optimised for daily charge and discharge cycles. - GEL technology: gelled electrolyte, fully sealed and maintenance-free. ### Will it fit your current battery tray? In terms of format, the Trojan 27-GEL measures 324 × 171 × 234 mm (length × width × height) and weighs 29 kg. It uses 7 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### What the Trojan 27-GEL is for Designed for off-grid photovoltaic installations and storage systems, the Trojan 27-GEL 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 29 kg and 7 terminals. ### Technology inside the Trojan 27-GEL The 27-GEL is one of the Trojan references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue. In a GEL battery the electrolyte is gelled with silica: it is fully sealed, cannot spill and tolerates deep discharge very well. It is the preferred technology in electric mobility, marine service and heavy-cycling applications. ### 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. All the Trojan batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Warranty and coverage The Trojan 27-GEL 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. ### Care and maintenance GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. In the darker months, check the voltage periodically and avoid full discharges. ### 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. ## Frequently asked questions ### Is the 27-GEL model a gel battery? Where is it used? Yes. The Trojan 27-GEL is GEL: sealed lead-acid in which the electrolyte is a gel. Designed for cyclic use (solar installations, motorhomes, electric wheelchairs, motorcycles), it tolerates deep discharges very well. It needs a GEL-specific smart charger: its maximum charge voltage is lower than that of an AGM. ### What are the dimensions of the Trojan 27-GEL battery? Check the room available in your device, because a single millimetre too much can stop the clamp from closing. Its dimensions are 324×171×234 mm, also written 324x171x234 mm; the height already includes the terminals. ## Compatible vehicles This battery fits 22 vehicles. Most searched: - [Hako Sweepmaster B650](https://baterias.com/gb/floor-sweeper-batteries/hako/sweepmaster-b650) - [Karcher BD 55/40 RS Bp](https://baterias.com/gb/floor-scrubber-batteries/karcher/bd-5540-rs-bp) - [Kent Euroclean Razor SV17](https://baterias.com/gb/floor-scrubber-batteries/kent-euroclean/razor-sv17) - [Nilfisk-Advance SC400](https://baterias.com/gb/floor-scrubber-batteries/nilfisk-advance/sc400) - [Karcher BR 40/25 C Bp](https://baterias.com/gb/floor-scrubber-batteries/karcher/br-4025-c-bp) - [Lavor Pro SCL Compact Free 45B](https://baterias.com/gb/floor-scrubber-batteries/lavor-pro/scl-compact-free-45b) - [Nilfisk-Advance SC430](https://baterias.com/gb/floor-scrubber-batteries/nilfisk-advance/sc430) - [Karcher BD 40/25 C Bp](https://baterias.com/gb/floor-scrubber-batteries/karcher/bd-4025-c-bp) - [Clarke Industries BSW 28](https://baterias.com/gb/floor-sweeper-batteries/clarke-industries/bsw-28) - [Nilfisk-Advance SW 750](https://baterias.com/gb/floor-sweeper-batteries/nilfisk-advance/sw-750) - [Tennant S5](https://baterias.com/gb/floor-sweeper-batteries/tennant/s5) - [Tennant T2](https://baterias.com/gb/floor-scrubber-batteries/tennant/t2) - [Tennant T300](https://baterias.com/gb/floor-scrubber-batteries/tennant/t300) - [Hako Sweepmaster B800](https://baterias.com/gb/floor-sweeper-batteries/hako/sweepmaster-b800) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-11-12*