Trojan J305E-AC · Traction battery 6V 305Ah
Specifications
| Brand | TROJAN |
|---|---|
| Part number | J305E-AC |
| Voltage (V) | 6 |
| Capacity (C20) | 305Ah (c20) |
| Capacity (C5) | 250Ah (c5) |
| Technology | Lead-acid |
| Length | 309.00 mm |
| Width | 174.00 mm |
| Height | 366.00 mm |
€536.60
VAT included
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Trojan J305E-AC 6V 305Ah 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 designbuilt for 8 hours of continuous daily work
- Deep discharges without damagefully recovers when recharged
- Long industrial lifespanpays back the investment over time
Voltage
6 V
Capacity
305 Ah
Dimensions
309×174×366 mm
Technology
Lead-acid
Weight
38 kg
Model
TROJAN ciclo profundo - T2 Technology
Golf cart battery Trojan J305E-AC ciclo profundo - T2 Technology 305Ah 6V
6VVoltage
305AhCapacity
38kgWeight
The 6 V, 305 Ah Trojan J305E-AC from the ciclo profundo - T2 Technology range with conventional lead-acid technology is designed for golf carts and electric utility vehicles. Measuring 309 × 174 × 366 mm, it is the direct replacement for golf carts fitted from the factory with a 305 Ah battery of this format.
- Good balance of capacity, cranking power and price.
- Reinforced plate construction for intensive use.
- Long service life in daily duty cycles.
- Standard format for golf carts and utility vehicles.
Dimensions, polarity and mounting
In terms of format, the Trojan J305E-AC measures 309 × 174 × 366 mm (length × width × height) and weighs 38 kg. It uses 4 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
What the Trojan J305E-AC is for
The Trojan J305E-AC is designed for golf carts and electric utility vehicles: deep discharges every day and a full overnight recharge. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 38 kg and 4 terminals.
The Trojan J305E-AC: ciclo profundo - T2 Technology range and conventional lead-acid technology
Within the Trojan catalogue, the ciclo profundo - T2 Technology series groups the references designed for this use. The J305E-AC is the 305 Ah model of that family, with the same performance as its siblings in other sizes.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.
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.
Warranty and coverage
The Trojan J305E-AC 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. Recharge the set fully after each round and avoid routine discharges below 20%.
When you get it and how to return it
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
BCOM-TROJAN-J305E-AC
Data sheet
- Brand
- TROJAN
- Reference
- J305E-AC
- Model
- TROJAN Deep Cycle - T2 Technology
- Voltage (V)
- 6
- Length
- 309.00 mm
- Width
- 174.00 mm
- Height
- 366.00 mm
- Weight
- 38 Kgs
- Technology
- Lead-acid
- Terminal type
- 4
- Capacity (C20)
- 305Ah (c20)
- Capacity (C5)
- 250Ah (c5)
Specific References
- EAN13
- 8404653001582
- MPN
- J305E-AC
4,60/5
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★★★★★Alejandro Carrasco
23/06/2026Me ayudaron en la elección de mi batería
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16/05/2026Os recomiendo la web
El mejor precio para una batería online
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09/04/2026Te asesoran gratis
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Codes and references Trojan J305E-AC
| Brand | Trojan |
|---|---|
| Manufacturer range | TROJAN Deep Cycle - T2 Technology |
| Manufacturer reference (MPN) | J305E-AC |
| EAN-13 barcode | 8404653001582 |
| Dimensions (length × width × height) | 309 × 174 × 366 mm (309x174x366) |
Recommended accessories
How to change the battery
Guide to replace a cyclic battery (12V 4-30Ah) for UPS, mobility scooter, alarm or backup device. Estimated time 10-15 minutes. Important: discharge residual voltage before handling.
Step 1. Power off and unplug the device
Unplug the device (UPS, scooter, alarm) and leave it off for at least 30 seconds to discharge residual capacitor voltage. Work on an insulating surface.
Step 2. Locate the battery compartment
Usually under the seat (mobility scooter/wheelchair), in the rear module of the UPS, or behind a side panel with screws. Check the device manual for unusual models.
Step 3. Disconnect the negative (−) first
With insulated gloves, remove the negative (−) cable first. Some UPS have protection fuses — note their position before removing.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Typical weight 1-15 kg depending on capacity. Many cyclic batteries are AGM/GEL — keep them upright. Do NOT invert the battery: even sealed, residue may exist.
Step 6. Fit the new battery
Same orientation and type (AGM, GEL or flooded). Polarity must match the device, not a chassis (this is not a car). Make sure terminals do not touch metal parts of the compartment.
Step 7. Connect the positive (+) first
On cyclic devices the order is reversed compared to cars: positive (+) first, negative (−) afterwards. Tighten without forcing — the plastic terminal housing of cyclic batteries damages easily.
Step 8. Initial charge before first use
Cyclic batteries ship at 60-80%. Before first use, connect the device charger for 8-12 hours (or use an AGM/GEL smart charger if available). This avoids short cycles and extends lifespan.
Frequently asked questions
How is the Trojan J305E-AC 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 does this battery last?
Expected lifespan of the Trojan J305E-AC is 4 to 6 years in regular device use without 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 J305E-AC battery?
Dimensions (length × width × height) are 309×174×366 mm — also written as 309x174x366 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 J305E-AC?
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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