Home » Frequently Asked Questions

DCACPOWER - Frequently Asked Questions

How long can I run the power inverter on my battery?

12 Volt Battery Chart

Inverter Output Power (Watts)	Typical Load	Battery Size
		BCI Group Size	22NF	24	27	8D	Dual 8D
		Reserve Capacity	90 Min	140 Min	180 Min	400 Min	900 Min
		Amps-Hrs	50	75	100	200	400
50	Stereo System	Operating Time	9 HRS	14 HRS	20 HRS	40 HRS	80 HRS
100	19" Color TV	Operating Time	4 HRS	6 HRS	10 HRS	20 HRS	40 HRS
200	Computer System	Operating Time	2 HRS	3 HRS	4.5 HRS	10 HRS	20 HRS
300	Blender	Operating Time	1.3 HRS	2.2 HRS	3 HRS	6 HRS	12 HRS
400	Power Drill	Operating Time	1 HR	1.5 HRS	2 HRS	4.5 HRS	10 HRS
600	Small Coffee Maker	Operating Time	N.R.	N.R.	1HR	2.5 HRS	6 HRS
800	Small Microwave	Operating Time	N.R.	N.R.	N.R.	1.5 HRS	4 HRS
1000	Toaster	Operating Time	N.R.	N.R.	N.R.	1 HR	3 HRS
1500	Full Size Microwave	Operating Time	N.R.	N.R.	N.R.	0.5 HR	2 HRS
2500	Hair Dryer & Washing Machine	Operating Time	N.R.	N.R.	N.R.	0.2 HR	0.8 HRS

Tip: Deep cycle (marine) batteries generally have the highest reserve ratings. They are also capable of withstanding repeated drains of power and recharging.

Tip: Engine start batteries should not be discharged below 90% charged state, and marine deep cycle batteries should not be discharged below 50% charged state. Doing so will shorten the life of the battery based on most battery manufacturers recommendations.

Note: If you intend to use power tools for commercial use, or any load of 200W for more than 1 hour regularly (between battery recharging) we recommend installing an auxiliary battery to provide power to the inverter. This battery should be a deep cycle type and sized to meet your run time expectations with the engine off. The auxiliary battery should be connected to the alternator through an isolator module to prevent the inverter from discharging the engine start battery when the engine is off.

More Questions? (Back to FAQ)