K5 Battery - why 3 terminals?!
Posted 12/02/2011 - 14:48
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It's been on the forum before. The T is for the temperature sensor (thermistor) in the battery. The charger "sees" the battery temperature under charge.
Best regards
Best regards
Too far from a shore.
Posted 12/02/2011 - 14:54
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Ah, Thanks for that cameradextrous!
Vic.
Vic.
K5, LightRoom 5
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1
Posted 13/02/2011 - 14:46
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Interesting - I don't notice lipos getting warm under charge in the same way that NiMh or NiCad cells did. Given the nominal voltage of most LiPo cells is 3.7V, that means our 7.4V packs are 2-cell arrangements. I'd have thought the third terminal was to allow balance charging of the two cells?
Posted 13/02/2011 - 16:07
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I don't know what other uses these battery cases have but there are an additional two "potential" cutouts on the casing giving a total of 5 "terminals"?
Vic.
Vic.
K5, LightRoom 5
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1
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Vic.
Sigma 8-16 Pentax DA 16-45 Pentax DA 55-300 Pentax 18-55WR Tamron 90 Di Macro Metz 44 AF-1