Identify the connections on a cordless tool battery

Im trying to Identify the connections on a cordless tool battery. Not for any real reason, just curious why so many contacts are needed.

Its a 18v Hitachi battery from a cordless drill. Batt # BCL 1815

There are 7 contacts. One is not used. The 6 which are used are labeled as such.

  1. +
  2. -
  3. T
  4. LS
  5. LE
  6. L+

The + and - are obvious.

But what are the others for?

Reply to
tubeguy
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onsdag den 5. juni 2019 kl. 01.16.10 UTC+2 skrev snipped-for-privacy@myshop.com:

best guess is +/- is the battery output, T is a temperature sensor (NTC to -)

Reply to
Lasse Langwadt Christensen

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