Slutsnackat

Okej, här kommer lite "hard facts" från EFRA:s AGM för oss som kör offroad:

1/10 Off-Road cars will be driven by a maximum of six cells. EFRA approved Lithium Polymer batteries may be used as an option for this class. See Appendix 10 for specifications.

THE RULE IS NEW
3.11 Rules for Lithium Polymer (LiPo) Batteries

1. Lithium Polymer (Li-Poly/LiPo) battery packs must have a hard, protective case that completely envelopes the cell(s). The case should be made from ABS or a similar material. The two halves of the case must be factory sealed in a way that any attempt to open the case will destroy the case. The only opening in the case that is allowed, is for the exit of wires.

The maximum case size is as follows:
Length: 139.0mm.
Width: 47.0mm. (The max. width includes any side exit wires).
Height: 23.5mm.
(additional chassis location protrusions are allowed)
Saddle-Pack cells are allowed, but must comply with the above dimensions. Saddle-Pack cells must have a combined dimension of 139.0mm max when placed end to end.

2. Individual cells used in the construction of the battery pack shall be rated at 3.7 volts nominal. Individual cells may be wired in parallel, but the maximum connection ‘In Series’ is two, to give a Final pack voltage of 7.4v nominal.

3. The battery pack shall have leads extending from the case for the positive and negative electrical connections using wire of adequate size to handle discharge rates acceptable to racing applications. Alternatively, the case shall have internal connection points for these wires clearly marked positive and negative so the user can apply the lead wires.

4. The case must have the original suppliers label intact, stating the rated voltage and the pack capacity. Maximum capacity is 5,500 mah. The Brand name/logo shall be easily readable.

5. All LiPo packs must be charged with a LiPo-capable charger using the industry standard CC/CV (Constant Current/Constant Voltage) charge profile.

6. LiPo batteries may be charged to a maximum of 8.44V. Overcharging is a serious safety hazard and will not be tolerated.

7. Any competitor found to be charging cells using a charger that is not specifically designed for LiPo cells, or using a charge profile other than the industry standard CC/CV, will be disqualified from the
event.

Any competitor found to have charged LiPo cells to above 8.40V will be disqualified from the event. In addition to the details above, it is requested that EFRA associated Members that distribute LiPo cells should advise on any further safety requirements and approval procedures.

Källa: Norges Motorsportforbund