Redback Thumper AGM Battery

How much $ ?

All lead acid batteries produce hydrogen gas. Most AGM's control the amount emitted either by using absorbent matting and/or pressure release valves. In most cases you would not be able to detect the emissions. That being said, ANY la battery is capable of venting.

There is no such thing as a truly 'sealed' lead acid battery.

A safe option is to attach a vent hose and route it externally. Many european car manufacturers do just that.

Hi Alex

Yes quite safe to use and charge inside the vehicle.

Site-Link Battery-Link



Don't try fitting a vent pipe ! (It may just void the warranty)

Regards

Derek.

The problem with these type of large battery pack is that people don't realise that trying to recharge them back to full capacity by plugging them into the vehicles fag socket when travelling is nigh on impossible.
Even when connected with heavy cables it takes many hours of constant driving to recharge the main battery and auxilary when outback touring. Typically when travelling there are plenty of stops which means plenty of starts, the frig and all the gear are being used constantly so if after say two days fixed camp you then travel on it may take 3 or 4 typical travelling days to recharge both vehicle batteries let alone a big battery pack.
If using something like a CPAP machine every night then it doesn't take long to totally drain a Thumper to the point where you can only recharge it on mains power, something that isn't available when bush camping in remote areas.

I just bought a Full River DC 110 ah for $315 delivered. It may be worth a look. It is a lot more battery than the Thumper, longer, and weighs in at 43KG (heavier plates).

I think Dunaruna may have been suggesting you vent the batterybox outside rather than the battery itself.Have a look at the Optima batteries,bit expensive,900cca,but you can mount them sideways,no leakage.Up to 5 year warranty.
Davo.