OK, been trying to figure this out for over a week now...
I'm trying to create a charge controller/balancer for LI-POL / LI-ION battery packs.
I started with the 16F1824 but it was doing weird things so i switched to an 18F46K22 and hooked up an LCD for diagnostics.
I even tried two known working 18K46K22's just incase it was a damaged chip.

The circuit at the moment is simple. 2 LI-IONs (for testing) linked in series. 5V supply to PIC and LCD VIA L7805CV fed from both battery's in series.
AN0 is the combined voltage from both cells via a 4:1 voltage divider (3K and 1K)
AN1 is the voltage between the two cells via a 2:1 voltage divider (1K and 1K)

The LCD gives me the analogue conversion values and the difference between them. This works perfectly

Atm, all outputs just have LED's hung on them for diagnostics.

I moved the outputs fro PORTC to PORTB and it's still doing the same thing...
When it executed "PORTB = 255" then all the LED's come on as they should.
BUT when i say,

BAT1BLEED = 1
BAT1BLEEDIND = 1
BAT2BLEED = 1
BAT2BLEEDIND = 1
ALARM = 1

Then only the BAT2BLEEDIND LED comes on.

I don't think i have done something stupid, but i'd appreciate another pair of eyes.

Thanks

Code:
@ __config _CONFIG1H, _FOSC_INTIO67_1H & _PLLCFG_ON_1H & _PRICLKEN_ON_1H & _FCMEN_ON_1H & _IESO_ON_1H 
@ __config _CONFIG2L, _PWRTEN_ON_2L & _BOREN_OFF_2L & _BORV_220_2L 
@ __config _CONFIG2H, _WDTEN_ON_2H & _WDTPS_32768_2H  
@ __config _CONFIG3H, _CCP2MX_PORTC1_3H & _PBADEN_OFF_3H & _CCP3MX_PORTE0_3H & _HFOFST_OFF_3H & _MCLRE_INTMCLR_3H
@ __config _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _XINST_OFF_4L & _DEBUG_OFF_4L
@ __config _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L & _CP1_OFF_5L & _CP2_OFF_5L & _CP3_OFF_5L
@ __config _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
@ __config _CONFIG6L, _WRT0_OFF_6L 
@ __config _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H
@ __config _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L & _EBTR2_OFF_7L & _EBTR3_OFF_7L
@ __config _CONFIG7H, _EBTRB_OFF_7H

INCLUDE "DT_INTS-18.bas"        ; Base Interrupt System
INCLUDE "ReEnterPBP-18.bas"     ; Include if using PBP interrupts

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   AD_INT,  _ADC_HANDLER,   PBP,  yes
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM

DEFINE LCD_DREG 		PORTD					' LCD data port
DEFINE LCD_DBIT 		0						' LCD data starting bit 0 or 4
DEFINE LCD_RSREG 		PORTE					' LCD register select port
DEFINE LCD_RSBIT 		0						' LCD register select bit
DEFINE LCD_EREG 		PORTE					' LCD enable port
DEFINE LCD_EBIT 		2						' LCD enable bit
DEFINE LCD_RWREG 		PORTE					' LCD read/write port
DEFINE LCD_RWBIT 		1						' LCD read/write bit
DEFINE LCD_BITS 		8						' LCD bus size 4 or 8 data bits
DEFINE LCD_LINES 		2						' Number lines on LCD
DEFINE LCD_COMMANDUS 	2000					' LCD Command delay time in us
DEFINE LCD_DATAUS 		50						' LCD Data delay time in us

Define  OSC				64						' Set clock speed

OSCCON = %01110000
OSCTUNE.6 = 1           ;PLL enable	

ANSELA = %11111111
ANSELB = %00000000
ANSELC = %00000000
ANSELD = %00000000
ANSELE = %00000000

TRISA = %11111111
TRISB = 0
TRISC = 0
PORTC = 0
TRISD = 0
PORTD = 0
TRISE = 0
PORTE = 0

CHAN VAR BIT
BAT1 VAR WORD
BAT2 VAR WORD
BAT1TEMP VAR WORD
BAT2TEMP VAR WORD
TEMPWORD VAR WORD
VALIDBATDATA VAR BIT
BAT1BLEEDCOUNT  VAR WORD
BAT2BLEEDCOUNT  VAR WORD
ALOOP   VAR BYTE

BAT1BLEED VAR PORTB.7
BAT1BLEEDIND VAR PORTB.6
BAT2BLEED VAR PORTB.5
BAT2BLEEDIND VAR PORTB.4
ALARM VAR PORTB.3

LCDOUT $FE, 1, "INITIALISING"
PORTB = 255
PAUSE 1000
PORTB = 0
PAUSE 1000
BAT1BLEED = 1
BAT1BLEEDIND = 1
BAT2BLEED = 1
BAT2BLEEDIND = 1
ALARM = 1
PAUSE 1000
BAT1BLEED = 0
BAT1BLEEDIND = 0
BAT2BLEED = 0
BAT2BLEEDIND = 0
ALARM = 0
PAUSE 1000
BAT1BLEED = 1
BAT1BLEEDIND = 1
BAT2BLEED = 1
BAT2BLEEDIND = 1
ALARM = 1
PAUSE 1000
BAT1BLEED = 0
BAT1BLEEDIND = 0
BAT2BLEED = 0
BAT2BLEEDIND = 0
ALARM = 0
PAUSE 1000
BAT1BLEED = 1
BAT1BLEEDIND = 1
BAT2BLEED = 1
BAT2BLEEDIND = 1
ALARM = 1
PAUSE 1000
BAT1BLEED = 0
BAT1BLEEDIND = 0
BAT2BLEED = 0
BAT2BLEEDIND = 0
ALARM = 0
PAUSE 1000
BAT1BLEED = 1
BAT1BLEEDIND = 1
BAT2BLEED = 1
BAT2BLEEDIND = 1
ALARM = 1
PAUSE 1000
BAT1BLEED = 0
BAT1BLEEDIND = 0
BAT2BLEED = 0
BAT2BLEEDIND = 0
ALARM = 0

CLEAR
@ INT_ENABLE AD_INT
ADCON2 = %10111110
ADCON1 = %00000000
ADCON0 = %00000011

LCDOUT $FE, 1

MAIN:
BAT1TEMP = BAT1
BAT2TEMP = BAT2
LCDOUT $FE, $80, DEC4 BAT1TEMP, " ", DEC4 BAT2TEMP, " " 
IF BAT1TEMP > BAT2TEMP THEN
    LCDOUT DEC4 (BAT1TEMP - BAT2TEMP), " "
    ELSE
    LCDOUT DEC4 (BAT2TEMP - BAT1TEMP), " "
ENDIF

IF BAT2TEMP > BAT1TEMP+5 THEN      
    BAT2BLEED = 1
    BAT2BLEEDIND = 1
    BAT1BLEED = 0
    BAT1BLEEDIND = 0    
    BAT2BLEEDCOUNT = 0
ELSE
    IF BAT2BLEEDCOUNT = 100 THEN
        BAT2BLEED = 0
        BAT2BLEEDIND = 0
        BAT2BLEEDCOUNT = 0
    ELSE
        BAT2BLEEDCOUNT = BAT2BLEEDCOUNT + 1
    ENDIF 
ENDIF

IF BAT1TEMP > BAT2TEMP+5 THEN      
    BAT1BLEED = 1
    BAT1BLEEDIND = 1
    BAT2BLEED = 0
    BAT2BLEEDIND = 0    
    BAT1BLEEDCOUNT = 0
ELSE
    IF BAT1BLEEDCOUNT = 100 THEN
        BAT1BLEED = 0
        BAT1BLEEDIND = 0
        BAT1BLEEDCOUNT = 0
    ELSE
        BAT1BLEEDCOUNT = BAT1BLEEDCOUNT + 1
    ENDIF
ENDIF

;IF BAT1 > 819 THEN
;    BAT1BLEED = 1
;    PORTC.1 = 1
;    BAT1BLEEDIND = 1
;    BAT2BLEEDIND = 1
;    PORTC.2 = 1
;    ELSE
;    PORTC.2 = 0
;    BAT1BLEEDIND = 0
;    BAT2BLEEDIND = 0
;ENDIF

;IF BAT1 < 614 THEN
;    BAT1BLEED = 0
;    PORTC.0 = 0
;    BAT2BLEED = 0 
;    BAT1BLEEDIND = 1
;    BAT2BLEEDIND = 1   
;    ELSE
;    PORTC.2 = 0
;    BAT1BLEEDIND = 0
;    BAT2BLEEDIND = 0
;ENDIF
GOTO MAIN

ADC_HANDLER:
TEMPWORD.LOWBYTE = ADRESL
TEMPWORD.HIGHBYTE = ADRESH

IF CHAN = 0 THEN
    ADCON0 = %00000111
    BAT1 = TEMPWORD
    CHAN = 1
@ INT_RETURN
ENDIF

IF CHAN = 1 THEN
    ADCON0 = %00000011
    BAT2 = TEMPWORD
    CHAN = 0
@ INT_RETURN
ENDIF
@ INT_RETURN