2020年6月6日 · For a typical 6f22-form factor battery it is something 2-20 ohm for a new battery at room temperature. It gets higher as the battery gets discharged, rises with discharge current and gets a bit lower for moderately elevated temperature (say, ~50C). The initial short-circuit current for such a battery is ~1 Ampere.

2012年11月12日 · What is the max current I could draw from a 9V battery? I'm looking to draw 150 mA aka 0.15A from a power source. Does a 12V battery have a higher current rating? :~ That depends on what type of 9V battery you're using and the type of chemistry used in it.

2019年10月10日 · I think what would be a lot more useful is the max current that can be provided at voltages of (say) 9v, 8,5v and 8.0v. After all, it is a 9v battery and output at 0.6v is likely to be irrelevant for any application that specifies a 9v battery.

2013年3月1日 · IT WILL NOT STAY AT 9V. You are killing a little 9V battery with a current of 9V/10 Ohms= 900mA. Look at the Duracell datasheet for their 9V alkaline battery. It performs poorly with a load current as high as 250mA. It has an internal impedance of 1.7 ohms so it begins producing 8V when its load is 588mA. With your load of 900mA it is dead in ...

2019年9月22日 · 1) The battery has a maximum power it can provide. For example, if this power is P = 100 W, then since P = RI^2 the current will be I = (P/R)^0.5 = 31.6 amps and the voltage V = RI = 3.16 V. 2) The battery has a maximum current it can provide. For example, if this current is I = 5 A, then V = RI = 0.5 V.

2016年12月29日 · So the total series resistance would be 6 * 0.3 Ω = 1.8 Ω for the 6 battery stack. At 2.2A the output voltage of the E91 battery stack would then be 9V - 1.8 Ω * 2.2A = 5.04V. The 5.04V would be for new batteries only. The battery output voltage lowers as the batteries discharge, so over time it will be much less than 5.04V.

2016年2月1日 · I've been working on a tiny rc car using an l293d dual H-bridge and an attiny84. I've been trying to power everything using two 9v batteries. I noticed before that I can't power both the board, which consumes 5v via regulator, and the H-bridge with one 9v, so now I'm using two. However, I've been noticing weird things when I try to run both 9v high speed motors off the two-battery system. To ...

2013年6月18日 · Since you haven't specified, I'd assume that you mean a household, commercially available 9V battery. A standard 9V battery has about 400-600 mAh capacity. In the most basic terms, these batteries can supply about 500 milliamps for one hour before being "dead". You could, in theory, draw the current you are looking for, but even for several 9V ...

2019年10月14日 · For example for a 9-V alkaline, this maximum output current would be (9V)/(2 Ohms) = 4,5A. But the actual delivered current will depends of course on your load. You could force a 9-V alkaline to deliver 2A, but because of the internal resistance you would have a 4 volts voltage drop on the internal resistance, and only 5 volts would be supplied ...

The range of current that can be delivered by a 9-V battery depends on its chemistry and quality of manufacturing (and design target). For example, a freshly made "Zeus 9V alkaline battery" can deliver 2.5 A of current (9.5V with 3.9 Ω load for 0.3s): With voltage drop of just 0.1 V, this make the battery ESR of 0.1/2.5 = 0.04 Ω.