TITAN 12V 80Ah Lithium Battery

The compact 242mm-long footprint matches small-leisure trays found in space-restricted vehicles and stationary installs. Where the bigger 019 batteries won’t physically fit, this is the lithium upgrade that does.

All TITAN batteries use lithium iron phosphate (LiFePO₄) prismatic cells — the most thermally and chemically stable lithium chemistry available. No cobalt, no nickel, no off-gassing, no acid. The trade-off is a slightly lower cell voltage (3.2V per cell, 4 cells = 12.8V) and lower energy density than the NMC cells used in EVs. In return, you get lifespans that make NMC look disposable: 3,000 to 25,000 cycles depending on use, against NMC’s 1,000 to 2,500.

A cycle is one full discharge plus one full recharge. Cycle count scales with how deep you take each discharge:

• 100% DoD — 3,000 cycles (~8.2 years at one cycle a day)
• 80% DoD — 6,000 cycles
• 50% DoD — 12,000 cycles (over 30 years of daily use)
• 30% DoD — 15,000+ cycles

TITAN cells are long, flat prisms that fill the rectangular case end to end. Cylindrical cells leave gaps between every cell and are much harder to repair (lots of spot welding), so TITAN pays the extra cost for prismatic and passes the capacity gain back to you — especially valuable in a compact case where every cm³ counts.

• Aluminium cell casing disperses heat evenly — even at full 100A BMS allowance, peak cell temperatures sit around 45°C, well inside spec
• Thermal runaway territory only starts around 100°C — nowhere near normal operation
• Heater mats also work better with prismatic cells — every cell sits against the heating element, rather than only the outer ring of a cylindrical pack

Matching this 80Ah in real-world lead-acid usable capacity means two Exide ER550 115Ah batteries paralleled up to 230Ah. One TITAN 80Ah replaces the lot — massive savings in space, weight and cabling, with no gassing so it can live anywhere.

9kg. Not 26kg.

The closest single lead-acid battery (Varta LFD90, 90Ah AGM) weighs 26kg and takes around three times the physical volume. A 17kg saving matters in a compact campervan or on a small boat — and it’s light enough to lift one-handed during install or storage.

99% electrically efficient

Almost every watt you put in comes back out. A great partner for solar — no wasted incoming charge — and happy to accept very high charge currents: 0 to 95% in under two hours at 100A+.

The battery management system is the circuit board between the cells and the terminals. It’s the difference between a lithium battery that lasts 15 years and one that self-destructs in two. Most brands fit an off-the-shelf board with generic parameters. TITAN doesn’t.

The TITAN BMS is custom, with parameters tuned to the exact cell spec used. That lets the cells run right up to their real safe working limits without compromising protection. It’s also how an extra 5–10% usable capacity comes out of every cell — an 80Ah can show as 85Ah fully charged. The bonus capacity isn’t guaranteed batch to batch, but the BMS re-maps its 100% reading automatically so the app always shows what you actually have.

Over-discharge, over-voltage, under-voltage, over-current, short-circuit, over-temperature, under-temperature, cell balance faults and more. All protections are temporary — they either self-reset or clear the moment the battery is put back on charge. Premium MOSFETs, oversized heat sinks and properly sized internal cabling all sized to comfortably handle the 100A continuous discharge rating.

Passive balancing is cheap: cells bleed off to each other and that’s it. Active balancing actively moves energy between cells, protecting the weakest cell from doing all the work. Most brands pick one. TITAN runs both — passive for small voltage deltas, active for larger ones. Keeps the BMS’s own power draw low while still giving the full benefit of active balancing. Automatic, most active when charging above 3.4V per cell, full effect between 90–100% SOC.

Lithium cannot be charged below 0°C without cell damage. The built-in heater mat wraps the internal pack and kicks in automatically at around 2°C whenever there’s an incoming charge current.

• Draws from the charger first; if the charger can’t keep up, pulls up to 3.6A from the battery itself
• Brings cell temperature to 10°C before routing charge back to the cells
• Expect roughly 20 extra minutes on charge time in the cold
• Discharge is unaffected and works down to −20°C

A fully discharged lithium battery left for months can be a lithium battery that doesn’t come back. Two hibernation modes prevent that:

• Automatic hibernation: triggers after several days of inactivity at low SOC. Battery stops outputting but retains enough headroom to last around 6 months before any cell risk. Wakes up the moment you put it on charge or open the app.
• User hibernation: triggered by the supplied on/off cable. BMS stays awake but charge and discharge are disabled. Perfect for winter storage — stops parasitic loads draining the battery over a season off the road.

Inverters, water pumps and small motors can pull 1,000A+ for a microsecond on start-up. Many BMSs read that as a short circuit and trip. The TITAN is tuned to ride those spikes without nuisance shutdowns, so start-up loads behave exactly the way they did on your old lead-acid.

Bluetooth is built in. The free TITAN app (iOS and Android, 10 languages) shows everything that matters in real time:

• Live voltage, current in both amps and watts
• State of charge as a percentage and in Ah
• Individual cell voltages
• Internal temperature
• Estimated time to full or empty
• Protection trip history
• Live balancing activity

Handles multiple batteries in series or parallel and re-calculates totals automatically — whether you’ve got one 80Ah or three in parallel, the figures on screen match the actual pack.

Designed as a direct, like-for-like replacement for compact small-leisure lead-acid batteries. Case, terminal layout and dimensions match the lead-acid spec, so there’s no need to rework trays, straps or cable runs.

• Charger: if your charger has no dedicated lithium preset, AGM or “Sealed” modes are accepted. Aim for max charge voltage of 14.4V
• Split-charge relays & DC-DC chargers: compatible out of the box
• Terminals: dual-purpose — high-performance copper round (SAE/automotive) for lead-acid clamp fitment, plus integrated M8 bolt for direct ring-terminal cabling. No adapters required.
• Mounting: 190mm tall as standard, fits under most seat bases. Mount on its side for 175mm height where needed. Upright is optimal for longevity.

TITAN backs every grade-A cell battery with a warranty that lasts the lifetime of the battery — fully transferable. The parent company has been trading continuously since 1948, so they intend to be around to honour it in 20 years’ time.

The warranty covers components against premature failure caused by manufacturing faults.

The TITAN 80Ah sits at around £280 new. Over its 10-year design life that’s just £28 a year.

The closest lead-acid equivalent — Varta LED95 or Exide EZ850 EFB — is around £200 with a 4-year design life, which means replacing it roughly 2.5 times over the same period. Call it £50 a year, with cascading labour each replacement.

If something fails, TITAN repairs the failed module — BMS, balance board, a single cell — rather than replace the whole battery. Lower cost, lower carbon footprint, faster turnaround. As a family of battery specialists trading since 1948, there isn’t much they haven’t already rebuilt.

• 1 × TITAN 80Ah Lithium Leisure Battery
• 1 × Hibernation cable (for user-mode storage hibernation)
• 1 × Set of M8 bolts
• 1 × User manual