I have a small inverter which says 300amp and I am wondering if it would be powerful enough to charge up a 11/2 amp/hr and a 4amp/hr battery which I am thinking of buying along with a small battery powered chain saw. Regards Tony
Whenarewethere said
05:46 PM Jun 3, 2019
If it is a small inverter, maybe it is 300 watts?
My Bosch low speed charger says 50 watts & up to 18 volt batteries, 2 amps output. I charge 6 AH batteries with it. The 6 AH batteries run out of steam pretty quickly on the leaf blower. I can't imagine 4 AH batteries lasting long on a chainsaw even if the battery is 54 volts.
Warren-Pat_01 said
09:29 AM Jun 4, 2019
G'day Tony,
For what you want it for, a 300 watt inverter will charge your batteries.
Bear in mind that most of these inverters are "Modified Sinewave" output - meaning they are ok for battery charging but do not connect them to sensitive tech equipt eg computers, phones, cameras. They have a chopped (combination sine, square) wave output.
Monitor your van's battery voltage when the unit is in use.
theberrys said
09:49 AM Jun 4, 2019
Thanks for your replies Whenwearethere & Warren-Pat 01 and sure the amps/watts mixup was a slip of the pen so to speak. regards Tony
Moose2 said
12:41 PM Jun 8, 2019
Tony - Check carefully that it can actually do what you want. I had a 300w modified sinewave unit (can't recall brand) and it was incapable of charging my chainsaw battery. Had to buy a pure sine wave unit. Went up to 600w whilst I was at it but if I recall correctly 300 would have been OK in pure sinewave form. BTW mine is an EGO chainsaw.
T1 Terry said
11:17 AM Jun 9, 2019
Moose2 wrote:
Tony - Check carefully that it can actually do what you want. I had a 300w modified sinewave unit (can't recall brand) and it was incapable of charging my chainsaw battery. Had to buy a pure sine wave unit. Went up to 600w whilst I was at it but if I recall correctly 300 would have been OK in pure sinewave form. BTW mine is an EGO chainsaw.
If it is near as good as the EGO hedge trimmer it would be a brilliant piece of gear. The hedge trimmer beats the petrol power job hands down and it was one of those orange and white jobs with the well known brand name.
Most hand tool lithium battery chargers these days require a pure sine wave inverter. Actually not that many things can be powered by a modified sine wave inverter these days, even the electronic temp control electric blankets, kettles and frypans won't work on a modified sine wave inverter.
T1 Terry
Moose2 said
07:21 AM Jun 12, 2019
T1 Terry wrote:
Moose2 wrote:
Tony - Check carefully that it can actually do what you want. I had a 300w modified sinewave unit (can't recall brand) and it was incapable of charging my chainsaw battery. Had to buy a pure sine wave unit. Went up to 600w whilst I was at it but if I recall correctly 300 would have been OK in pure sinewave form. BTW mine is an EGO chainsaw.
If it is near as good as the EGO hedge trimmer it would be a brilliant piece of gear. The hedge trimmer beats the petrol power job hands down and it was one of those orange and white jobs with the well known brand name.
Most hand tool lithium battery chargers these days require a pure sine wave inverter. Actually not that many things can be powered by a modified sine wave inverter these days, even the electronic temp control electric blankets, kettles and frypans won't work on a modified sine wave inverter.
I have a small inverter which says 300amp and I am wondering if it would be powerful enough to charge up a 11/2 amp/hr and a 4amp/hr battery which I am thinking of buying along with a small battery powered chain saw. Regards Tony
If it is a small inverter, maybe it is 300 watts?
My Bosch low speed charger says 50 watts & up to 18 volt batteries, 2 amps output. I charge 6 AH batteries with it. The 6 AH batteries run out of steam pretty quickly on the leaf blower. I can't imagine 4 AH batteries lasting long on a chainsaw even if the battery is 54 volts.
For what you want it for, a 300 watt inverter will charge your batteries.
Bear in mind that most of these inverters are "Modified Sinewave" output - meaning they are ok for battery charging but do not connect them to sensitive tech equipt eg computers, phones, cameras. They have a chopped (combination sine, square) wave output.
Monitor your van's battery voltage when the unit is in use.
Tony - Check carefully that it can actually do what you want. I had a 300w modified sinewave unit (can't recall brand) and it was incapable of charging my chainsaw battery. Had to buy a pure sine wave unit. Went up to 600w whilst I was at it but if I recall correctly 300 would have been OK in pure sinewave form. BTW mine is an EGO chainsaw.
If it is near as good as the EGO hedge trimmer it would be a brilliant piece of gear. The hedge trimmer beats the petrol power job hands down and it was one of those orange and white jobs with the well known brand name.
Most hand tool lithium battery chargers these days require a pure sine wave inverter. Actually not that many things can be powered by a modified sine wave inverter these days, even the electronic temp control electric blankets, kettles and frypans won't work on a modified sine wave inverter.
T1 Terry