Question about Makita BL1815-2 18 Volt 1.5 Ah Compact Lithium-Ion Battery - 2 Pack
Tried it a few times. got the charge up to around 13.9 and it still wont charge. i dont understand, because the battery isnt that old to begin with. thanks for the suggestion.
Posted on Oct 12, 2014
I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger
Posted on May 23, 2008
SOURCE: Battery Issues
When Li-Ion batteries are discharged to a too low voltage (below 2,75 V/cell, in this case 13,75V) the charger will assume that the battery is damaged, and will not charge the battery. First measure the battery voltage with a volt meter, if the voltage is significally below the 13 V the battery are no good. If you have a reading of lets say around 10 V, you can raise the voltage shortly on the battery, by jumping it with a fully charged battery. Connect the "-" poles on each battery. After this, shortly connect the "+" poles, for no more than 5 seconds,disconnect the wires and immediatly put the battery in question in the charger. If it starts charging, every thing if fine. If not, try the process again, you might wanna recheck the voltage if it rises.
Please be aware, that over discharging Li-Ion batteries, will lead to damage of the Li-Ion cells, which results in loss in capacity, therefore, if you are not to use your Li-Ion tools for a while, make sure the batteries are fully charged.
Hope you guys could have sucess with the above
Posted on Jun 28, 2008
SOURCE: When putting the battery in
Have you tried just waiting a few minutes, it might start to charge anyway. But if not, is there some reason you would assume that you don't have a bad battery? There are lots of bad Li-Ion batteries.
Posted on Sep 03, 2010
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