Tested in our own name. On our own packs.
Many leisure batteries are sold on a certificate that belongs to the cell inside them, or to the factory that assembled them. Ours is not. TITAN packs have been type tested to IEC 62619:2022, the international safety standard for lithium batteries in industrial, motive and marine use, with Groves Batteries named as the manufacturer and the complete battery as the item under test.
What the test actually asks.
IEC 62619 is not a paperwork exercise. It is a sequence of abuse tests, run at both cell level and on the finished battery, and the battery either survives them or it does not. Ten tests were carried out. All ten passed.
At cell level
External short circuit
The terminals are shorted directly and the cell has to survive it.
Impact
A bar is laid across the cell and a mass dropped onto it.
Thermal abuse
The cell is heated until something has to give.
Overcharge
Charged well past full, at the maximum current the pack is rated for.
Forced discharge
Driven into reverse polarity by the cells around it.
Internal short circuit
A short is induced inside the cell itself, which is the failure mode behind most lithium fires.
At battery system level
Overcharge control of voltage
The charger is left running past the cut off point and the BMS has to stop it.
Overcharge control of current
The same again, on current rather than voltage.
Overheating control
The pack is pushed outside its safe temperature window and the BMS has to intervene.
Drop
The complete battery is dropped, at its full weight.
Tested by an independent laboratory against IEC 62619:2022, on TITAN packs, to reports TCT260805B001 and TCT260805B002.
The standard the marine world keeps pointing at.
ISO 23625:2025, the standard for lithium-ion batteries in small craft, states that batteries shall meet the requirements of IEC 62619 and IEC 62620. The Boat Safety Scheme tells installers that a competent installer should only use lithium-ion batteries meeting those two standards. The Maritime and Coastguard Agency says much the same in MGN 681 for coded vessels, and IEC 62619 is named in the type approval requirements of the major classification societies.
Those two standards are always quoted as a pair because they answer different questions. Here is exactly where TITAN sits against each.
IEC 62619, the safety half
Asks whether the pack stays safe when something goes wrong: overcharge, short circuit, crush, forced discharge, an internal short inside a cell, and a BMS that has to intervene before any of it becomes a fire.
TITAN packs are type tested to IEC 62619:2022 in our own name, on our own finished batteries, by an independent laboratory. Reports TCT260805B001 and TCT260805B002.
IEC 62620, the performance half
Asks whether the cell does what its datasheet claims: rated capacity, cycle life, behaviour at temperature, and the designation and marking that let one cell be compared honestly with another.
This one is written for cells, not packs. TITAN cell performance against IEC 62620 is verified by the cell manufacturer in its own IECEE-registered laboratory and stated in the published cell specification.
We would rather set that out plainly than let one standard stand in for the other. If your insurer, surveyor, installer or BSS examiner has asked what your battery is tested to, that is the answer, and we will put it in writing on headed paper with the report numbers on it.
On the road, the approval is ECE R10.
IEC 62619 covers industrial, stationary, motive and marine use, and its scope excludes road vehicles. We are specific about that rather than letting one approval stand in for another. For a motorhome, campervan or any vehicle used on the road, the approval that matters is UN ECE R10, the automotive electromagnetic compatibility regulation, and every battery in the 12V range carries it.
R10 confirms the battery does not create intolerable electromagnetic disturbance and keeps working within the regulation's immunity limits when something else on the vehicle does. It covers the battery. The complete conversion is the installer's responsibility, and an insurer may ask for further evidence covering the installation as a whole.
The complete list.
| Standard | Applies to | What it covers |
|---|---|---|
| IEC 62619:2022 | Battery system | Safety of the finished pack under electrical, thermal and mechanical abuse |
| IEC 62619:2022 | Cell | Safety of the cell, certified under the IECEE CB scheme |
| IEC 62620 | Cell | Performance and endurance of the cell in industrial use |
| UN 38.3 | Battery system | Transport safety. Altitude, thermal cycling, vibration, shock, external short circuit, impact and overcharge |
| UN ECE R10 | Battery system | Automotive electromagnetic compatibility, emissions and immunity |
| CE marking | Battery system | EU declaration of conformity, EMC Directive 2014/30/EU |
| UKCA marking | Battery system | UK declaration of conformity against the equivalent UK legislation |
| RoHS | Battery system | Restriction of lead, mercury, cadmium and other listed substances |
| ISO 9001:2015 | Manufacturing | Certified quality management system at the manufacturing site |
| ISO 14001:2015 | Manufacturing | Certified environmental management system at the manufacturing site |
Test reports and certificates are held on file and issued on request.
Why it passes.
Prismatic cells, nothing else
Safety starts at the cell. TITAN uses automotive grade prismatic cells in rigid laser welded cases. Pouch cells, the soft format used in phones and in a good deal of cheap storage, can swell and split under pressure. Cylindrical cells give away thermal stability and vibration resistance that a vehicle or a boat will find. Prismatic is the only format we will build on.
A BMS that is ours
Every pack is managed by a custom TITAN BMS, specified by us to match the cells we use. It watches every cell continuously and disconnects on short circuit, over-voltage, under-voltage and temperature outside the safe window, including refusing a charge when the pack is too cold to accept one safely. It carries the highest mosfet count in its class, anti-vibration silicone on every contact, and it is heat-sinked and module-based so it can be repaired rather than replaced.
All of it, in one signed document.
Our certificate of compliance lists every standard above, states what each one rests on, and is signed by our founder. It is the document to hand an insurer, a marine surveyor or a building control officer who asks what the battery is tested to.
Installers, surveyors and insurers who need the underlying references can request the controlled copy, which carries every certificate and report number behind the summary.
