Quantcast

how many aH in a 9v battery

The Rocketry Forum

Help Support The Rocketry Forum:

rocketsonly

Well-Known Member
Joined
Apr 7, 2004
Messages
877
Reaction score
0
Hey all. Just wondering because I couldn't find the information on my 9v battery (those small rectangular ones). Does anyone know the aH in one of these tiny batteries? I've got a bunch lying around!
Thanks.
 

jwagner61

Well-Known Member
Joined
Jul 3, 2004
Messages
96
Reaction score
0
Different types of batteries have different ratings/capacities. Two types of 9 V batteries I've used are NiMH and NiCd. The NiMHs are rated at 160 mAh (.16 Ah) and the NiCds are 120 mAh as conviently printed on the battery. Standard Alkaline batteries have similar ratings.
These ratings are not particulary useful when considering high-current applications (i.e., motor/deployment e-matches). The internal resistance limits battery performance in these cases and NiCads are usually preferred.
As I've found out, a freshly charged or new battery is really a good idea for electronic deployment apps, regardless if Ah ratings.
 

Rocketjunkie

Addicted to APCP
Joined
Jan 19, 2009
Messages
4,126
Reaction score
351
An alkaline 9V is about 650 mAh but cannot provide as much current as the rechargable ones. Your electronics will run longer but the current to igniters is less (unless the current is limited by the electronics).
 
Top