How do I test a Hitachi UC10SFL battery charger

probably not
older chargers were made for ni-cad batteries and now they are li- ion batteries which require a different charger
to distinguish the difference , most manufacturers changed the battery pack design
talk with a battery retailer or a good tool shop or appliance repair shop

Ether the battery is shot or the charger, Did you try charging a different battery?

Charger may have the complaint

I live by hitachi, one of the good things about it is lowes will exchange them as long as you have a receipt and it's under 30 days. If not chargers are not very expensive, or you can send it back for repairs. I have 10 of those combo packs and never had a problem with a single one, for you to get 2 is a freak accident.

I've followed HELP2DIY's advice

4 #3 phillips screws will open the case

there are actually 2 fuses 15A glass type which i can see that both wires through the visible glass are intact

the rest of the resistors and capacitators & what-not on the circuit board/ breadboard also show no signs of any electrical burns

i've also have 2 replacement batteries just to test this charger & still blinking

any others found a way to fix this "made in china" product?

i also went to AzOn for similar reviews with no real answer but to just buy another one

Just try to buy a new battery and test.If persist,change the charger. Bet the bats are dead.

hi

it shows you that the battery is charging.

regards savumihai71

You may be able to find one on eBay

Hi Firemedic13; Most chargers like yours have a fuse inside them. Remove the screws that hold the charger together. The fuse will be on the low voltage side of the transformer. Un-solder and replace it with one of the same value. If the charger is not held together with screws (doubtfull) you will have to carefully cut along the seam where they were glued together. A dremmel tool works good for this. After repairing use some ABS pipe glue to re-seal them together. If the fuse is not blown then the unit will require testing by someone that is proficient with a multimeter. Most times it is the transformer that has fried a wire. If the sides of the transformer have any burnt spots on it then it will be the culprit. Hope this has helped. Best regards; HELP2DIY Please dont forget to rate my answer.