The ACCU THERMO battery has been designed to efficiently and reliably supply power to heated dive wear and umbilical dive lights operating at 12V. Simple and intuitive control, high efficiency, and exceptional durability distinguish the ACCU THERMO from other devices in the modern diving equipment market.

The ACCU THERMO has two connection ports, located at the top part of the casing. One port, featuring a permanently installed E/O cord (cords with wet connectors), is designated exclusively for heated dive wear. The heating supply offers a three-stage heating control with settings of: 0%, 70%, and 100%. This port is equipped with an intelligent E/O circuit. The total electrical load capacity for the connected equipment (lighting, heated dive wear: undersuit, vest, gloves) is 200 W!

The "charging/torch" port is used to charge the battery and to connect 12V umbilical lights. This port is secured with an aluminum cap.

Please remember to secure the port with the cap when it is not in use for charging or powering the umbilical light. Diving with a battery that has an improperly secured cap on the charging port may lead to flooding, which can damage the battery.

The LED indicator is located on the top cover of the battery and informs the user about the battery charge level and the operating status of the entire system.

After the power is turned on, the indicator first lights up for 4 seconds, providing information about the battery charge level:

• Green, steady: 75%-100% charge capacity
• Green, blinking: 50%-75% charge capacity
• Red, blinking: 25%-50% charge capacity
• Red, steady: less than 25% charge capacity

After the first four seconds, the indicator switches to a mode that indicates the operating status and the connection status of the heated dive wear:

• Two repeated red flashes followed by one green flash – battery ready, E/O receiver not connected.

When the receiver is connected and detected, the E/O circuit becomes active and begins supplying power to the connected device.

• Green, steady – receiver connected; the system is functioning properly.

The three-stage power control (0%, 70%, 100%) ensures effective energy management and allows for extended battery life.

The power is regulated by a large magnetic switch, which has a distinct step that is easily noticeable, even when wearing thick gloves.

It is an electronic circuit that protects the E/O cord (the metal pins in the E/O cord connector) against the harmful effects of electrolysis. When the ACCU THERMO is not connected to any receiver (e.g., a heated vest), there is no voltage on the wet connector (E/O cord end). Thanks to the "intelligent E/O" feature, the voltage is automatically cut off when the cord is unplugged during operation. This way, whenever the unconnected E/O cord is in the water, no electrical current passes through its pins, ensuring the system remains safe from damage.

The casing is made of a combination of hard-anodized aluminum and Policatal (POM C). Policatal (POM C) is a lightweight and extremely durable polymer resistant to mechanical damage. The aluminum alloy used in the ACCU THERMO is lightweight, durable, and resistant to corrosion in seawater. Additionally, the aluminum components of the ACCU THERMO are covered with a protective layer of hard anodization, making the battery even more resistant to wear and mechanical damage. All graphics and inscriptions on the casing are laser-engraved, ensuring they are easy to read and highly durable. The ACCU THERMO 14 casing is secured with two O-rings.

ACCU THERMO is the only battery on the market equipped with a safety exhaust valve.

The safety valve is located in the lower part of the casing and protects the battery against damage.

In the event of a Li-Ion battery pack failure, gas may be emitted, which could cause the battery casing to explode.

The valve is maintenance-free and should not be disassembled. Do not interfere with the operation of the valve in any way.

Each Ammonite System battery pack is equipped with a BMS (Battery Management System) that ensures safe operation. This system is necessary because the pack uses Li-Ion cells, which are very sensitive to overcharging, deep discharges, and short circuits.

The BMS provides additional benefits, including extending the life of the battery cells and maintaining a minimum safe level of charge.

The transportation of lithium batteries is subject to international regulations that may vary depending on the mode of transport: whether by sea, road, or air.

To meet strict transport safety standards, the lithium-ion (Li-Ion) batteries used in ACCU THERMO comply with the requirements of UN Transportation Testing (UN/DOT 38.3).

The appropriate certificate can be downloaded from our website.

AMMOPOWER - top quality products and services backed by our extended to 3-year warranty.

The AMMO LITHIUM CHARGER is designed to charge ACCU THERMO lithium series batteries with a voltage of 10.8 – 11.1V. It is a universal, impulse current source that switches off automatically when the battery is fully charged. The charging time depends on the current status of the battery pack, which is displayed on the LCD. Note that the charger indications are only approximate, providing an estimate of the battery charge level. Additionally, the charger is protected against voltage surges occurring in the 100/240V network.

Since we only have one habitable planet, everyone must play a part in protecting the environment.

At Ammonite System, we are deeply committed to preserving the environment, and we’re actively doing our part.

When selecting boxes, bags, or containers, we have chosen to use recyclable cardboard packaging instead of plastic.

Recyclable packaging is an excellent way to extend the life of previously used materials and positively impact sustainability.

We offer ACCU THERMO as a set which includes:

• ACCU THERMO

• Universal handle for attaching the battery to a harness

• AMMO LITHIUM CHARGER 

• Blind plug for E / O cord

• Silicone band for E / O cord

• Ammonite Butter - silicone grease

• Two silicone O-rings