Make sure the ones you buy are good for 13.5 volts. They cost about $3 each rather than $1.I bought from ebay (Honkong) cheep and they work great
search ebay G4 LED 12vdc there is a lot of choices...
Try this: http://www.aliexpress.com/product-f...-White-Warm-White-lamp-10pcs-wholesalers.htmlThanks... Do you know who you bought them from
Did you check if these are good to 13.5V? If not, they could melt and cause a fire when the batteries are charging.I bought these year ago very good light...
http://www.ebay.com/itm/1X-G4-Led-2...es&hash=item416486a49f&vxp=mtr#ht_3353wt_1349