How to properly register electric tool in IC2V2

public class IHLMod {
public static IHLMod instance;
public static Item ic2_handpump = (new IHLHandPump().setUnlocalizedName("handpump"));
public static Item ic2_handpump_discharged = (new IHLHandPump().setUnlocalizedName("handpump_discharged"));

@EventHandler
public void preInit(FMLPreInitializationEvent evt) {
MinecraftForge.EVENT_BUS.register(new IHLEventHandler());
GameRegistry.registerItem(ic2_handpump, "Handpump");
GameRegistry.registerItem(ic2_handpump_discharged, "Discharged handpump");
}

public class IHLHandPump extends Item implements IElectricItem {

public static int maxCharge = 10000;

@Override
@SideOnly(Side.CLIENT)
public void registerIcons(IIconRegister par1IconRegister)
{
this.itemIcon = par1IconRegister.registerIcon(IHLModInfo.MODID + ":itemElectricHandpump");
this.setMaxDamage(2);
}

public IHLHandPump()
{
super();
this.maxStackSize = 1;
this.setCreativeTab(CreativeTabs.tabMisc);
}


@Override
public boolean canProvideEnergy(ItemStack itemStack) {
return false;
}

@Override
public Item getChargedItem(ItemStack itemStack) {
return IHLMod.ic2_handpump;
}

@Override
public Item getEmptyItem(ItemStack itemStack) {
return IHLMod.ic2_handpump_discharged;
}

@Override
public int getMaxCharge(ItemStack itemStack) {
return maxCharge;
}

@Override
public int getTier(ItemStack itemStack) {
return 1;
}

@Override
public int getTransferLimit(ItemStack itemStack) {
return 0;
}

public ItemStack onItemRightClick(ItemStack par1ItemStack, World par2World, EntityPlayer par3EntityPlayer)
{
ElectricItem.manager.discharge(par1ItemStack,40,1,false,false);
return par1ItemStack;
}
}