jopete wrote:i have run wal mart batteries for years. especially when my airboat has dual batteries.
i got a fancy agm battery in the gpu boat. i sink it every now and then and don't want it filling up with swamp water. lol
Question, doesn't all, or most all batteries have a breather vent
i don't know. you are suppossed to be able to mount the battery in any position, so i figured it was sealed.
hadn't had to find out yet!! lol
The batteries do not have to be in a box but if they are, they should be vented as per ABYC recommendations. AGM's are SVR (sealed valve regulated) batteries.
A vent system or other means shall be provided to permit the discharge from the boat of hydrogen gas released by the battery.
Battery boxes, whose cover forms a pocket over the battery, shall be vented at the uppermost portion of the cover.
NOTE TO 10.7.9 and 10.7.10: These requirements also apply to installations of all batteries whether they employ removable vent caps, non-removable caps, are “sealed” or “maintenance free” batteries, or have pressure regulated valve vent systems with immobilized electrolyte (gel batteries).
Location of Batteries and Battery Charger (see ABYC E-10, Storage Batteries). Consideration should be given to the following:
- Adequate ventilation should be provided to the bank of batteries to limit the temperature rise during the charging. Sealed valve regulator batteries do allow escape of hydrogen gasses during overcharging; therefore, SVR batteries require the same precautions for ventilation as wet (flooded) batteries. During the charging process, fully enclosed battery boxes will result in a greater temperature rise than with an open battery box.
https://www.gpo.gov/fdsys/pkg/CFR-2005- ... -15-10.pdf