Lifetime Warranty
Why offer a lifetime?
We're confident enough in the cells, the BMS and the build quality of every TITAN battery that we became the first - and so far only - lithium battery company to offer a genuine lifetime warranty.
Most lithium warranties cap out after 5, 7 or 10 years. We don't think that's fair. A modern LiFePO4 pack will physically last 20-30 years if you treat it sensibly, so capping cover at year 7 means you're paying premium money for a product the manufacturer expects to outlive their own promise. Instead, we warrant the battery and its components for the working life of the battery itself - heavy-duty users and weekend campers get the same protection.
A promise 80 years in the making
TITAN Lithium is the in-house premium brand of Groves Batteries Ltd, a Cheltenham battery specialist that's been trading since 1948. We design every battery to our own spec, work with a long-standing partner factory that grades cells the way we ask them to (see How we test our cells), and run every finished pack through end-pack QC in Cheltenham before it ships. That control over both the spec and the QC is why we can stand behind a TITAN battery for as long as the battery itself lasts.
| Issue / Component | Coverage | The details |
|---|---|---|
| BMS failure | ✓ Covered | If the brain of the battery fails electronically. |
| Cell defects | ✓ Covered | Internal shorts, assembly faults, premature death. |
| Heater mats & Bluetooth | ✓ Covered | Any failure of internal accessory modules. |
| Normal capacity loss | ✗ Not covered | Batteries wear like tyres - expect ~10% loss per decade. Anything below 80% of original rated capacity is out of warranty (subject to usage & individual inspection). |
| User damage | ✗ Not covered | Lack of charging, water damage, crash impact, incorrect wiring. |
Who is covered?
The warranty applies to the battery only and is fully transferable - if you sell the vehicle or vessel the battery's installed in, the cover travels with it. Just keep your original order number and pass it on to the new owner.
How we fix it
Because we designed the batteries to be modular - every BMS, sensor module, Bluetooth radio and heater pad is its own replaceable unit - we can repair them in-house at Cheltenham instead of writing the whole pack off. We always go for component repair over full replacement: it cuts waste, it's faster, and it gets your battery back in service quicker.
The specifics
- Every claim is reviewed individually using your battery's own BMS logs. The 80%-capacity rule is a guideline, not a hard line - if a manufacturing defect has caused the battery to degrade faster than your usage warrants, you're still covered.
- The warranty covers manufacturing faults in the cells and BMS components.
- "Lifetime" refers to the working life of the battery, not of the user or any connected equipment.
- Lithium does wear out, just very slowly. Expect roughly 5-10% capacity loss per decade with normal use and in-spec charging. A new 150Ah typically tests around 165Ah; ten years in it'll read about 150Ah; twenty years in, around 135Ah.
- Cover runs to a minimum of 3,000 cycles (one full charge + one full discharge = one cycle). For most users that's 10-20 years of real-world use, or until something outside the warranty causes the battery to become unsuitable for its application.
What is “unsuitable”?
“Unsuitable” can refer to capacity loss passing below the 80% threshold due to wear and tear or improper care. Examples include:
- Wilful damage; abnormal storage or working conditions; accident; negligence by you or by any third party.
- Failure to operate or use the product in accordance with the user instructions or its intended normal use.
- Any addition or modification to the product.
- Any alteration or repair by you or by a third party who is not one of our authorised repairers.
- Any specification provided by you.
- Damage due to improper installation - loose terminal connections, under-sized cabling, incorrect connections (series or parallel where not specifically supported), short circuits or reverse polarity.
- Damage caused by incorrect charging, including the use of unsupported lead-acid-only chargers, or charging at a voltage or current that exceeds the recommended parameters.
- Environmental damage, inappropriate storage conditions, exposure to extreme heat or cold, fire, freezing or water damage.
- Damage caused by collision or impact.
- Damage due to improper maintenance - under- or over-charging the product, dirty terminal connections, etc.
- Products that have been opened, modified or tampered with.
- Products that were used for applications other than those they were designed for.
- Products used on over-sized loads, or products under-sized for the application.
- Products that were not stored in adherence with the manufacturer’s storage guidelines - including storage at low or 100% state of charge, at temperatures exceeding 40°C, or placed on a continual float charge.
Capacity loss is a normal battery characteristic, tied to cycle count and age. As a general rule we consider anything below 80% of the original rated capacity unsuitable, and the warranty becomes void at that point.
The fine print: full warranty terms
This page is the plain-English explainer for the lifetime warranty on our leisure and marine batteries. The binding warranty document - covering exclusions, the claim process, testing, liability and governing law - is at titanlithium.co.uk/pages/warranty-terms. Both apply to every lifetime-warranty purchase.
For TITAN Labs starter batteries, which carry a separate 8-year limited warranty with a 60-day fit-check return window for ECU-rejected installs, see the Labs warranty page and clause 4 of the warranty terms.
Warranty cover provided by Groves Batteries Ltd, trading as TITAN Lithium. Registered in England & Wales, company no. 05699836. Contact info@titanlithium.co.uk.
