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 Post subject: Makita battery date?
PostPosted: Thu Jul 05, 2018 6:57 pm 
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My new Makita batteries have arrived :-)
Looking around the net, there are people saying that the top of the two codes here includes the date: year = first two digits, then week = second two digits, then some other stuff.
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But.. whilst '17 is good for the year, 'week 88' doesn't make sense to me, which puts the theory in doubt.

Does anyone know if the 17 of this number is at least the year? TBH thats all I'm really interested in, just to know and keep track of roughly how old the batteries are.

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 Post subject: Re: Makita battery date?
PostPosted: Thu Jul 05, 2018 7:10 pm 
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Can you read the QR code, maybe an app on your phone, (even I've got one of those). :shock:

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 Post subject: Re: Makita battery date?
PostPosted: Thu Jul 05, 2018 7:30 pm 
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Sadly the QR code is far too small for my feeble phone. I may have another go with the camera tomorrow; if I can get a sharper picture and blow it up, the phone may bring itself recognise that.

I can however tell you that the small vents at the front of the battery are configured as a secret code... that mean AAAAA :lol:

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 Post subject: Re: Makita battery date?
PostPosted: Thu Jul 05, 2018 7:51 pm 
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The other thing to do is to forget about it altogether because when all said and done, unless the battery has been on the shelf for 3 years it won't make a blind bit of difference if you are a tradesman. What will make a difference is the way the battery is treated - the sort of duty cycle, charge regime. storage and use environment. All I do is date when I bought it (month/year) and that's it. Anything more is, quite frankly, overkill - especially as a Makita dealer can give you a read-out of the duty.cycle life of any 18 volt Makstar battery

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 Post subject: Re: Makita battery date?
PostPosted: Thu Jul 05, 2018 8:31 pm 
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suspect it week 25/2017 so end off june :dunno:

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 Post subject: Re: Makita battery date?
PostPosted: Thu Jul 05, 2018 11:48 pm 
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Could be, would certainly work, though not sure why there would be the 88 in between year and week.. strange.

Job and Knock wrote:
The other thing to do is to forget about it altogether because when all said and done, unless the battery has been on the shelf for 3 years it won't make a blind bit of difference if you are a tradesman.
Yes, I was mostly just curious to check what I'd bought - i.e. that the batteries haven't been sat in a warehouse somewhere for years. The DeWalt ones I'm used to have the actual date stamped on, so probably just force of habit.

But it seems likely that the 17 means last year, and either way they are from a reputable retailer with good turnover (in this case FFX) so realistically they aren't going to be old. I'm sure you're right that anything over and above that won't make much difference; so I'll just number and do as you do, with the current date. :thumbright:

Thanks!

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