# Deep cycle battery Trojan J305-AES 6V 279Ah AGM ![Deep cycle battery Trojan J305-AES 6V 279Ah AGM](https://baterias.com/6749-home_default/battery-trojan-j305-aes-6v-279ah.jpg) > Deep cycle battery Trojan J305-AES 6V 279Ah AGM. Trojan AES range. Dimensions 296Γ—176Γ—358 mm, 45 kg. 14 models: JLG Industries Inc., Skyjack Inc.. Ask for price **Category:** [TROJAN AGM batteries](https://baterias.com/gb/batteries-trojan-agm) β†’ [TROJAN](https://baterias.com/gb/trojan) - **Canonical URL**: https://baterias.com/gb/battery-trojan-j305-aes-6v-279ah - **Language**: en-GB - **Brand**: TROJAN - **Reference**: BCOM-TROJAN-J305-AES - **MPN**: J305-AES - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | TROJAN | | Reference | J305-AES | | Model | Trojan AES | | Voltage (V) | 6 V | | Largo | 296 mm | | Ancho | 176 mm | | Alto | 358 mm | | Peso | 45 kg | | TecnologΓ­a | AGM | | Capacity (C20) | 279 Ah (c20) | | Capacity (C5) | 228 Ah (c5) | | Case type | BCI 902 | | Energy (Wh) | 1920 Wh | ## Quick description **Trojan J305-AES 6V 279Ah** is a traction battery for industrial electric vehicles: forklifts, pallet trucks, elevating platforms, cleaning machines (scrubbers) and golf buggies. Built for deep discharges and 8-hour continuous work cycles. ## Why this traction battery? - **Industrial design** built for 8 hours of continuous daily work - **Deep discharges without damage** fully recovers when recharged - **Long industrial lifespan** pays back the investment over time πŸ”Œ Voltage 6 V ⚑ Capacity 279 Ah C20 πŸ“ Dimensions 296Γ—176Γ—358 mm βš™οΈ Technology AGM βš–οΈ Weight 45 kg 🏷️ Model Trojan Aes ## Description ## Golf cart battery Trojan J305-AES Aes 279Ah 6V 6*V* Voltage 279*Ah* Capacity 45*kg* Weight With **279 Ah** with AGM technology, the **Trojan J305-AES** from the **Aes** range withstands the daily deep discharges of golf carts and electric utility vehicles. Measuring 296 Γ— 176 Γ— 358 mm, it is the direct replacement for golf carts fitted from the factory with a 279 Ah battery of this format. - Long service life in daily duty cycles. - Standard format for golf carts and utility vehicles. - AGM: faster recharging and better cycle resistance than a conventional battery. - Reinforced plate construction for intensive use. ### Size, terminals and hold-down of the Trojan J305-AES In terms of format, the Trojan J305-AES measures 296 Γ— 176 Γ— 358 mm (length Γ— width Γ— height) and weighs 45 kg. 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 J305-AES is for With 279 Ah, the Trojan J305-AES forms part of the battery banks of golf carts and electric utility vehicles. Always replace the complete set to avoid imbalance. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 45 kg. ### The Trojan J305-AES: Aes range and AGM technology The **Aes** is the Trojan range the J305-AES belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. 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. ### Why choose Trojan batteries Founded in 1925 in California, Trojan invented the golf cart battery and remains the standard in deep-discharge applications that demand thousands of cycles. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Official warranty The Trojan J305-AES 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 Always replace all the batteries in the bank at once and use the charger specified by the vehicle manufacturer. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. ### Delivery times and returns Orders placed **before [[ks:cutoff]]** 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 **[[ks:return_days]] 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 Trojan J305-AES an AGM battery and what are the benefits of AGM? Yes. The J305-AES 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 do I change this battery step by step? 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). 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 J305-AES model? Expected lifespan of the Trojan J305-AES 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. ### Which batteries are equivalent to the Trojan J305-AES? 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 β€” 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. ## Compatible vehicles This battery fits 14 vehicles. Most searched: - [JLG Industries E400AJPN](https://baterias.com/gb/articulating-and-telescopic-boom-lift-batteries/jlg-industries/e400ajpn) - [Skyjack SJ6832 RTE](https://baterias.com/gb/scissor-lift-batteries/skyjack/sj6832-rte) - [Hillyard Industries R36SS Plus](https://baterias.com/gb/floor-scrubber-batteries/hillyard-industries/r36ss-plus) - [JLG Industries M400AJP](https://baterias.com/gb/scissor-lift-batteries/jlg-industries/m400ajp) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” automotive battery specialists since 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-22*