0
\$\begingroup\$

Would replacing a 3.7v 1000mAh lithium ion battery with a 3.7v 5000mAh lithium ion batter make my projects last longer between charges?

\$\endgroup\$
4
\$\begingroup\$

Except in very pathological cases, the replacement will let your project last 5 times as long. Consider: Let's say your project draws 1 amp. By definition, your battery will produce that current for 1 hour. That's what 1000 mAh means - 1000 mA x 1 hour. By the same token, 5000 mAh / 1000 mA gives 5 hours.

Like I say, there are some exceptions, but the general principle is clear.

An example of an exception: Your project heats up (and keeps getting hotter) and just barely survives the one hour duration the first battery produces. With a larger battery, the project catches fire after 2 hours. Like I say, pretty unlikely, but not impossible.

\$\endgroup\$
  • \$\begingroup\$ So your answer is yes but will a bunch of warning saying be careful? \$\endgroup\$ – user46629 Jul 19 '14 at 1:56
  • \$\begingroup\$ My answer is yes, provided you are not doing something really strange. For the general run of things folks do with a 3.7 volt battery, 5 times greater capacity will give you five times longer between charges. \$\endgroup\$ – WhatRoughBeast Jul 19 '14 at 2:16
  • \$\begingroup\$ If the project is a siren and you leave it on for five hours straight your neighbour might reshape it with a baseball bat. Another exception for you. \$\endgroup\$ – Vladimir Cravero Jul 19 '14 at 7:28

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.