Trojan J305P-AC · Traction battery 6V 330Ah
Specifications
| Brand | TROJAN |
|---|---|
| Part number | J305P-AC |
| Voltage (V) | 6 |
| Capacity (C20) | 330Ah (c20) |
| Capacity (C5) | 271Ah (c5) |
| Technology | Lead-acid |
| Length | 296.00 mm |
| Width | 176.00 mm |
| Height | 366.00 mm |
€618.50
VAT included
4,83/5★★★★★9 reviewsVerified purchases
- ★★★★★Alfonso Ruiz:
Tenía dudas sobre qué batería elegir y me ayudaron a elegir la batería correcta
- ★★★★★Angel Pastor:
Compre la TROJAN J305P-AC y llamé para que me ayudaran con la instalación. Muy buena asesoría
- ★★★★David Cortes:
Recomiendo esta web, excelente servicio
Trojan J305P-AC 6V 330Ah 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
330 Ah
Dimensions
296×176×366 mm
Technology
Lead-acid
Weight
44 kg
Model
TROJAN ciclo profundo - T2 Technology
Golf cart battery Trojan J305P-AC ciclo profundo - T2 Technology 330Ah 6V
6VVoltage
330AhCapacity
44kgWeight
The 6 V, 330 Ah Trojan J305P-AC from the ciclo profundo - T2 Technology range with conventional lead-acid technology is designed for golf carts and electric utility vehicles. Measuring 296 × 176 × 366 mm, it is the direct replacement for golf carts fitted from the factory with a 330 Ah battery of this format.
- Long service life in daily duty cycles.
- Standard format for golf carts and utility vehicles.
- Good balance of capacity, cranking power and price.
- Reinforced plate construction for intensive use.
What the Trojan J305P-AC is for
With 330 Ah, the Trojan J305P-AC 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 44 kg and 6 terminals.
Size, terminals and hold-down of the Trojan J305P-AC
The Trojan J305P-AC is made in the 296 × 176 × 366 mm format and weighs 44 kg. It uses 6 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.
The Trojan J305P-AC: ciclo profundo - T2 Technology range and conventional lead-acid technology
The ciclo profundo - T2 Technology is the Trojan range the J305P-AC 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.
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.
Why choose Trojan batteries
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 J305P-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.
Usage and maintenance tips
Recharge the set fully after each round and avoid routine discharges below 20%. On batteries with filler caps, check the electrolyte level and top up only with distilled water.
Shipping, delivery and returns
Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 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 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.
BCOM-TROJAN-J305P-AC
Data sheet
- Brand
- TROJAN
- Reference
- J305P-AC
- Model
- TROJAN Deep Cycle - T2 Technology
- Voltage (V)
- 6
- Length
- 296.00 mm
- Width
- 176.00 mm
- Height
- 366.00 mm
- Weight
- 44 Kgs
- Technology
- Lead-acid
- Terminal type
- 6
- Capacity (C20)
- 330Ah (c20)
- Capacity (C5)
- 271Ah (c5)
Specific References
- EAN13
- 8404653001605
- MPN
- J305P-AC
4,83/5
Verified purchasesLatest verified reviews
★★★★★Alfonso Ruiz
23/05/2026Me asesoraron en la batería
Tenía dudas sobre qué batería elegir y me ayudaron a elegir la batería correcta
★★★★★Angel Pastor
10/02/2026No sabía que el asesoramiento era gratis, de 10
Compre la TROJAN J305P-AC y llamé para que me ayudaran con la instalación. Muy buena asesoría
★★★★★David Cortes
01/02/2026De lo mejor
Recomiendo esta web, excelente servicio
★★★★★Rodrigo Pascual
09/01/2026Rápido y sencillo
Pedí la batería un viernes a las 4 y me llegó el lunes a las 11
★★★★★Raul Ramirez
08/12/2025Resolvieron mis dudas
Tenía dudas sobre qué bateria elegir y me ayudaron a elegir la bateria correcta
Codes and references Trojan J305P-AC
| Brand | Trojan |
|---|---|
| Manufacturer range | TROJAN Deep Cycle - T2 Technology |
| Manufacturer reference (MPN) | J305P-AC |
| EAN-13 barcode | 8404653001605 |
| Dimensions (length × width × height) | 296 × 176 × 366 mm (296x176x366) |
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 J305P-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 J305P-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 measurements of the J305P-AC model?
Dimensions (length × width × height) are 296×176×366 mm — also written as 296x176x366 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 J305P-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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