Thursday, Jun 20, 2013 at 13:41
Priscilla G
It is a second battery!
Most battery boxes have a relatively small battery in them and unless you want the convenience factor of that style of power supply you may be better served with a dedicated battery which can be connected is a dual battery system.
A bigger battery in a suitable box with suitable charging connectors may fit the bill and also be cheaper.
All depends on the style of use you require.
Little
inverters are cheap and most are not full sine wave. A number of modern small appliance are switch mode power converters and some of them do not like the "modified square wave" power output and don't start or burn out.
Some laptop supplies are the same, some will run on the crappy wave form and some get hot or burn out or blow internal fuses.
Transformer style power packs are ok.
Best to
check and do a quick
test to see if what you might run, does actually run on that inverter. If not it isn't worth having.
You can always buy a different style of battery box and have a suitable separate small inverter to plug onto it and use if and when needed.
Integral multi function battery boxes while catering for various use options generally don't do any one feature particularly
well as the price dictates the end result. ie all a compromise.
Check the AH hour rating of the battery as only half that rating is the realistic use if you want the battery to last with the frequent recharging which will be required. The fridge AH use per day will govern the battery required.
Small battery, relatively short use before needing recharging
Bigger battery, longer use time but also takes longer to recharge.
Decisions decisions, if that one suits then should be OK.
Ross M
AnswerID:
513455