Deep Cycle Battery Warranty

Deep Cycle Battery Warranty

Battery Empire – Warranty, Testing & Fault Assessment

Deep cycle batteries are designed to provide steady power over time and be recharged properly. The majority of deep cycle “warranty” returns are caused by undercharging, over-discharging, incorrect chargers, or loads exceeding the battery’s design.

Flat does NOT mean faulty

A deep cycle battery being flat is usually a usage/charging issue, not a defect.

Before you claim warranty – do these checks

  • Confirm what the battery is powering (fridge, inverter, lights, pumps)
  • Check if the battery has been repeatedly discharged very low
  • Confirm your charger/DC-DC settings match your battery type (AGM/Calcium/Lithium etc.)
  • If solar is fitted, confirm the controller is charging correctly
  • If you have a voltmeter, check resting voltage after the battery has been off charge/loads for a few hours
  • If the battery has been stored flat or unused, expect permanent damage

The blunt truth about deep cycles

Deep cycle life depends heavily on:

  • Depth of discharge (how low it’s taken)
  • Recharge quality (getting back to 100%)
  • Correct charge profile for the battery type
  • Temperature and ventilation
  • Load size (especially inverters)

Common non-warranty causes (deep cycle batteries)

  • Battery not being fully recharged (most common)
  • Incorrect DC-DC or mains charger settings
  • Inverter use causing heavy discharge
  • Fridges running too long without recharge
  • Solar not sized properly or shaded/poor wiring
  • Leaving the battery at low voltage for extended periods
  • Over-discharging below recommended limits

What MAY be covered

A battery may qualify if, after being fully charged correctly:

  • It fails a capacity test
  • It has an internal fault confirmed by testing
  • It is within the warranty period and used within spec

What is NOT covered

  • Discharge damage from being left flat or deeply discharged
  • Incorrect charger settings or unsuitable charging equipment
  • Loads exceeding battery design (e.g. large inverters without adequate capacity)
  • Poor installation (undersized cables, bad connections, lack of fusing)
  • Heat damage, physical damage, corrosion, abuse

How Battery Empire tests deep cycle batteries

Deep cycle claims often require:

  • Full charge
  • Rest period
  • Capacity testing over time

Important: A quick voltage check does not prove battery health. Deep cycle capacity must be tested properly.

Fees

Batteries found to be discharged, incorrectly charged, or not faulty may incur a testing/recharge fee.

Bring-in requirements

  • Proof of purchase required
  • If possible, bring info on your setup: charger brand/model, DC-DC settings, solar controller type, inverter size, fridge model, and typical usage

 

Battery Empire will always assess warranty claims fairly and in line with manufacturer guidelines. Where a claim is approved as a genuine manufacturer warranty, the cost is passed on to the supplier.

In goodwill or non-warranty situations, Battery Empire must absorb the full cost of replacement, which is not sustainable and cannot be offered as a standard outcome.