Mike, Would need a bit more detail to give the best answer, but here are some general tips to point you in the right direction. Need to know if you get any LEDs on the charger or batteries, do you have other batteries you can use to test the charger/tool to isolate the problem (even the old NiCads)? Does this problem occur with one or both new batteries? Anyway, read below for some suggestions:
Lithium Ion batteries do not like to be fully discharged even if they are new. If you ran a tool until the battery fails, two problems can occur. 1. The circuitry in the charger and the battery itself senses a fault due to "too low" voltage in the cells, and prevents charging as a protection measure (prevents overheating a shorted cell). 2. You damaged the cell(s) inside the battery either due to sulfate build up or heat. If your Ryobi charger is flashing a red LED (no green) indicating battery fault,
I have found that removing the battery and reinserting it multiple times can help as the charger does a diagnostic when you first insert the battery. This test likely applies a small charge to the cells and analyzes the response, if you do the test enough, it can bring the cells back up to a sufficient level to allow the charger to accept it.
If the battery charger cycles normally but displays a full charge very quickly, the battery may be defective and not pulling any current from the charger, so the charger thinks it's fully charged.
If the battery charger does not sense the battery at all (no LED display) then the problem could be a defective charger, defective (open) battery or corroded/dirty connections (make sure no paint or dirt got into the charger port and no rust on the contacts).
SOURCE: Ryobi Model 1412001, 16vdc, 2A
I've open the charger and found that Q4 is open. But they have removed the part number from the component so you can't get a replacement.
SOURCE: Zivan NG3 battery charger diagrams
Hi,
your NG3 should have been preprogrammed for the type of batteries you are charging. The NG3 has the 3 wires from the power cord. Here is what I have done:
Brown from charger goes to black wire
Blue goes to white wire
yellow green goes to green ground.
SOURCE: can i charge a 14v battery using a 18v charger (both are ryobi)
Absolutely not. The risk of damage to the battery is only a minor concern compared to the fire hazard you would be creating.
SOURCE: Battery charges but is dead
The battery isn't any good. The charger is just going through it's regular steps. (I know how it is. I just bought two Ryobi 18 volt batteries for my Ryobi cordless drill, reciprocating saw, flashlight,
trim circular saw, combo set. $60 for two batteries)
SOURCE: I have a new Ryobi 18V Drill which came in a
Take it back to the store and tell them it is no good, and get a new pair of batteries, take the charger too. I had the same thing, brand new batteries, gone in weeks, they replaced them, no problem.
Testimonial: "Excellent advice. I immediately contacted Screwfix who sent a replacement part which arrived the next day and works perfectly."
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