The charger for my hitachi second fix nailer seems to have packed up. Putting a discharged battery in it and powering it up (from the wall adapter or the car charger) sees the charger clicking a relay internally, the CHARGING led blinks on, then another click and the LED extinguishes again
Looks like a new one is 80 quid (!) and used about half that, so I'm looking for another way to charge these batteries. I recalled that most mobile phone batteries are similarly specced: 3.7v and 1500mah, so I wondered about opening the hitachi charger, and soldering wires from its battery connectors to the battery connectors of a cheap phone I have lying around (got loads of old crap) and presto; the mobile phone software can charge the battery, right?
Is the 0.1v difference critical?
I also, coincidentally, have a bosch AL1115CV intended for charging the 10.8v batteries that power my screw gun, but I see adverts indicating the AL1115CV can do batteries between 3.6v and 10.8v - should I put efforts into making a small adaptor (e.g. a plug made of wood, plastic etc, and wired to the socket of the knackered charger) so I can effectively turn the knackered charger into a physical adapter that mates the hitachi battery with the bosch charger? (Pic of bosch here, can be zoomed with reasonable clarity: http://www.ebay.co.uk/itm/BOSCH-AL1...293618?hash=item2828dd73f2:g:pS4AAOSw-0xYd8bd)
The hitachi batteries have 4 terminals (+, -, L+ and S - pictured here: http://www.ebay.co.uk/itm/HITACHI-U...238580?hash=item4d520061f4:g:dlsAAOSwt5hYdTSK) - any idea what L+ would be? I'm assuming S is a sensor for temperature (?) like mobile phone batteries have
Looks like a new one is 80 quid (!) and used about half that, so I'm looking for another way to charge these batteries. I recalled that most mobile phone batteries are similarly specced: 3.7v and 1500mah, so I wondered about opening the hitachi charger, and soldering wires from its battery connectors to the battery connectors of a cheap phone I have lying around (got loads of old crap) and presto; the mobile phone software can charge the battery, right?
Is the 0.1v difference critical?
I also, coincidentally, have a bosch AL1115CV intended for charging the 10.8v batteries that power my screw gun, but I see adverts indicating the AL1115CV can do batteries between 3.6v and 10.8v - should I put efforts into making a small adaptor (e.g. a plug made of wood, plastic etc, and wired to the socket of the knackered charger) so I can effectively turn the knackered charger into a physical adapter that mates the hitachi battery with the bosch charger? (Pic of bosch here, can be zoomed with reasonable clarity: http://www.ebay.co.uk/itm/BOSCH-AL1...293618?hash=item2828dd73f2:g:pS4AAOSw-0xYd8bd)
The hitachi batteries have 4 terminals (+, -, L+ and S - pictured here: http://www.ebay.co.uk/itm/HITACHI-U...238580?hash=item4d520061f4:g:dlsAAOSwt5hYdTSK) - any idea what L+ would be? I'm assuming S is a sensor for temperature (?) like mobile phone batteries have
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