2018 Battery Rules

As per 01-01-2018 there are 2 options when using Lipo batteries to power boats in the M class.

First option: Weight and Voltage controlled batteries.

Mini Eco, mini Eco Team, mini Mono, mini Hydro: Battery weight upto max 113grams but 30mm (of at least AWG 16 or 1,3mm²) cable to each pole.

Eco expert, Eco expert Team, Mono 1, Mono 2: Battery weight upto 285 grams but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.

Mono 2, Hydro 2: Battery weight upto 570 grams but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.

FSR-E: Battery weight upto 855 grams but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.

Full battery weights and requirements for all classes in Anex A1A update 2018

Second option: Energy Limiter.

Mini Eco, Mini Eco Team, Mini Mono, Mini Hydro: No minimum, no maximum weight for batteries, but 30mm (of at least AWG 16 or 1,3mm²) cable to each pole.
Maximum Energy to be used: 20Wh or 1200Wmin.

Eco expert, Eco expert team, Mono 1, Hydro 1: No minimum, no maximum weight for batteries, but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.
Maximum Energy to be used: 58Wh or 3480Wmin.

Mono 2, Hydro 2: No minimum, no maximum weight for batteries, but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.
Maximum Energy to be used: 116Wh or 6960Wmin

FSR-E: No minimum, no maximum weight for batteries, but 30mm (of at least AWG 12 or 3,3mm²) cable to each pole.
Maximum Energy to be used: 174Wh or 10440Wmin.

These values can be updated once per year, at the beginning of the year by e mail voting with all affiliated M class countries.

Ramp down time is set to 5 seconds for all values and/or classes.

Dead time after limit is reached is set to 60 seconds for all values and/or classes.

Full Energy chart in Anex A1C 2018

 in view of general safety packs must be made in such a way they do not fall appart when taken out of the boat. Meaning, some sort of permanent fixation (strong rubber bands,armoured tape etc) has to make sure the packs do not fall appart when the cooling plates are removed. In plain words: a battery pack without the cooling plates installed MUST still be a solid block in which the individual cells cannot put any strain on the tabs, causing possible rupture of those tabs.

Geens Walter

Naviga M section leader