By . Steve Nolan . PUBLISHED: . 08:40 EST, 5 February 2013 . | . UPDATED: . 11:33 EST, 5 February 2013 . Experts probing the fire on a Dreamliner which has grounded the whole fleet today released fresh images of the charred battery at the centre of the investigation. Pictures show the blackened remains of the lithium device as well as a frayed and broken earth wire, designed to reduce the risk of electric shock, which was attached to it at the time it ignited. Investigators also confirmed that they had linked the in-flight fire which forced the All Nippon Airways service to make an emergency landing in Japan last month to a similar incident in Boston. Overheated: The charred battery from the Dreamliner plane which made an emergency landing on January 16 in Takamatsu, is inspected by the manufacturer at the headquarters of GS Yuasa Corp in Kyoto, western Japan . Link: Investigators found similar damage to the lithium ion battery to that suffered by a battery on another Dreamliner which was also forced to make an emergency landing in Boston last month . Damage: A ground wire which was attached to the burnt battery is showed charred, frayed and broken . The . Japanese Transportation Safety Board released the images as it . continues to look at the reason why an All Nippon Airways flight was . forced to land on January 16. CAT scans of the overheated . lithium ion battery revealed similar damage to an incident just over a . week earlier on January 7 which saw another Dreamliner make an emergency . landing in Boston. All 50 Boeing 787s belonging to eight airlines in seven different countries remain grounded while investigations continue. The . latest probe is said to have found evidence of short-circuiting and . 'thermal runaway' - a chemical reaction which causes overheating. The . All Nippon Airways flight made an emergency landing in western Japan . after a cockpit message warned of battery problems and a burning smell . was detected in the cockpit and cabin. An . investigator in Japan at the time said the burned insides of the . plane's lithium ion battery showed the battery received voltage in . excess of its design limits. Experts . from the US National Transportation Safety Board (NTSB) had already . disassembled the device believed to have caused the earlier Boston fault . in a bid to discover the cause of the malfunction - but admitted late . last month that they were no closer to reaching a conclusion. Gutted: The extent of the damage to the Dreamliner's battery, left, is best illustrated when it is placed next to an undamaged model, right . Charred: A CAT scan of the damaged battery shows that six of the battery's eight cells were all but destroyed . But a week ago, Elon Musk, the . founder of Tesla Motors said the batteries used by Boeing in its . Dreamliner aircraft are 'inherently unsafe' - after it emerged that an . airline replaced the batteries ten times before all 787s were grounded. All . Nippon Airways (ANA) said it had to replace the batteries on its 787 . aircraft ten times because they failed to charge properly or showed . other problems. And Japan Airlines also said it had replaced batteries on the 787 'on a few occasions'. Lithium . ion batteries are more susceptible to catching fire when they overheat . and are more likely to short-circuit than other types of batteries. Boeing . built in safeguards to gain safety certification for use of the . relatively light and powerful batteries to power various electrical . systems on the 787, the world's first airliner made mostly from . lightweight composite materials. Investigation: The singed battery case from the Japan Airlines (JAL) Boeing 787 Dreamliner which caught fire in Boston is displayed inside an investigation lab at the NTSB Headquarters in Washington, DC . Probe: The state-of-the-art Dreamliner continues to be grounded as the investigation into the cause of the thermal damage continues . Burnt: The NTSB's Joseph Kolly, holds part of the badly fire-damaged battery casing from the plane involved in the Boston incident. The battery has been taken apart by experts in a bid to work out what went wrong . Investigators earlier said they . found no evidence of quality problems with production of the 787's . batteries by Kyoto, Japan-based, GS Yuasa, whose own aerospace ambitions . are on the line. But the issue may have hit the company's business hard judging by its latest figures. Yuasa . said Tuesday that its April-December net profit fell 3.6 percent to 5.5 . billion yuan ($59.6 million) from a year earlier, as demand for . batteries lagged due to sluggish demand in Japan and overseas. The . company has struggled to turn its lithium ion business to . profitability. In April-December its lithium ion business posted a 7.2 . billion yen ($78.2 million) loss, it said, compared with an operating . loss of 3.26 billion yen in the full-year that ended March 31, 2012. Although . Dreamliner aircraft are currently grounded because of unsafe batteries, . it emerged last week that restrictions against carrying the batteries . as cargo were lifted. Pilots . and safety advocates argued that it is too risky to fly with the . batteries on board at all if the plane's battery system makes it too . unsafe to fly. The new . regulations were brought into effect on January 7 - the same day as one . of the batteries caught fire on a Japan Airlines 787 flight. The . aircraft had landed 40 minutes earlier at Boston Airport and almost 200 . passengers and crew had disembarked when a cleaning team smelled smoke . and alerted fire crews. The . Dreamliner is the first airliner to make extensive use of lithium-ion . batteries. They charge faster and can be better moulded to space-saving . shapes compared with other aeroplane batteries. The . battery fire is just one of  a series of problems  - including  two . fuel leaks, a wiring problem, brake computer glitch and cracked cockpit . window – to afflict the 787 which got off to a bad start when launched . three years late. Mike . Sinnett, chief engineer on the 787, said last month that the plane's . batteries have operated through a combined 1.3 million hours and never . had an internal fault. He said they were built with multiple protections to ensure that failures 'don't put the airplane at risk'. Incident: A 787 made a landing in Takamatsu after a burning smell was also . detected in its cockpit. Both All Nippon Airlines and Japan Airlines . have grounded their entire Dreamliner fleets . Complex: Parts for the flagship craft are constructed by firms around the world . Out of service: One of United Airlines six 787s sits on the tarmac at George Bush Intercontinental Airport in Houston .
Pictures of burnt out battery from All Nippon Airways 787 revealed .
The Dreamliner was forced to make an emergency landing on January 16 .
Investigators have taken device apart to figure out what went wrong .
They have linked emergency landing to similar incident in Boston .
The planes remain grounded worldwide as investigation continues .
By . Steve Nolan . PUBLISHED: . 08:40 EST, 5 February 2013 . | . UPDATED: . 11:33 EST, 5 February 2013 . Experts probing the fire on a Dreamliner which has grounded the whole fleet today released fresh images of the charred battery at the centre of the investigation. Pictures show the blackened remains of the lithium device as well as a frayed and broken earth wire, designed to reduce the risk of electric shock, which was attached to it at the time it ignited. Investigators also confirmed that they had linked the in-flight fire which forced the All Nippon Airways service to make an emergency landing in Japan last month to a similar incident in Boston. Overheated: The charred battery from the Dreamliner plane which made an emergency landing on January 16 in Takamatsu, is inspected by the manufacturer at the headquarters of GS Yuasa Corp in Kyoto, western Japan . Link: Investigators found similar damage to the lithium ion battery to that suffered by a battery on another Dreamliner which was also forced to make an emergency landing in Boston last month . Damage: A ground wire which was attached to the burnt battery is showed charred, frayed and broken . The . Japanese Transportation Safety Board released the images as it . continues to look at the reason why an All Nippon Airways flight was . forced to land on January 16. CAT scans of the overheated . lithium ion battery revealed similar damage to an incident just over a . week earlier on January 7 which saw another Dreamliner make an emergency . landing in Boston. All 50 Boeing 787s belonging to eight airlines in seven different countries remain grounded while investigations continue. The . latest probe is said to have found evidence of short-circuiting and . 'thermal runaway' - a chemical reaction which causes overheating. The . All Nippon Airways flight made an emergency landing in western Japan . after a cockpit message warned of battery problems and a burning smell . was detected in the cockpit and cabin. An . investigator in Japan at the time said the burned insides of the . plane's lithium ion battery showed the battery received voltage in . excess of its design limits. Experts . from the US National Transportation Safety Board (NTSB) had already . disassembled the device believed to have caused the earlier Boston fault . in a bid to discover the cause of the malfunction - but admitted late . last month that they were no closer to reaching a conclusion. Gutted: The extent of the damage to the Dreamliner's battery, left, is best illustrated when it is placed next to an undamaged model, right . Charred: A CAT scan of the damaged battery shows that six of the battery's eight cells were all but destroyed . But a week ago, Elon Musk, the . founder of Tesla Motors said the batteries used by Boeing in its . Dreamliner aircraft are 'inherently unsafe' - after it emerged that an . airline replaced the batteries ten times before all 787s were grounded. All . Nippon Airways (ANA) said it had to replace the batteries on its 787 . aircraft ten times because they failed to charge properly or showed . other problems. And Japan Airlines also said it had replaced batteries on the 787 'on a few occasions'. Lithium . ion batteries are more susceptible to catching fire when they overheat . and are more likely to short-circuit than other types of batteries. Boeing . built in safeguards to gain safety certification for use of the . relatively light and powerful batteries to power various electrical . systems on the 787, the world's first airliner made mostly from . lightweight composite materials. Investigation: The singed battery case from the Japan Airlines (JAL) Boeing 787 Dreamliner which caught fire in Boston is displayed inside an investigation lab at the NTSB Headquarters in Washington, DC . Probe: The state-of-the-art Dreamliner continues to be grounded as the investigation into the cause of the thermal damage continues . Burnt: The NTSB's Joseph Kolly, holds part of the badly fire-damaged battery casing from the plane involved in the Boston incident. The battery has been taken apart by experts in a bid to work out what went wrong . Investigators earlier said they . found no evidence of quality problems with production of the 787's . batteries by Kyoto, Japan-based, GS Yuasa, whose own aerospace ambitions . are on the line. But the issue may have hit the company's business hard judging by its latest figures. Yuasa . said Tuesday that its April-December net profit fell 3.6 percent to 5.5 . billion yuan ($59.6 million) from a year earlier, as demand for . batteries lagged due to sluggish demand in Japan and overseas. The . company has struggled to turn its lithium ion business to . profitability. In April-December its lithium ion business posted a 7.2 . billion yen ($78.2 million) loss, it said, compared with an operating . loss of 3.26 billion yen in the full-year that ended March 31, 2012. Although . Dreamliner aircraft are currently grounded because of unsafe batteries, . it emerged last week that restrictions against carrying the batteries . as cargo were lifted. Pilots . and safety advocates argued that it is too risky to fly with the . batteries on board at all if the plane's battery system makes it too . unsafe to fly. The new . regulations were brought into effect on January 7 - the same day as one . of the batteries caught fire on a Japan Airlines 787 flight. The . aircraft had landed 40 minutes earlier at Boston Airport and almost 200 . passengers and crew had disembarked when a cleaning team smelled smoke . and alerted fire crews. The . Dreamliner is the first airliner to make extensive use of lithium-ion . batteries. They charge faster and can be better moulded to space-saving . shapes compared with other aeroplane batteries. The . battery fire is just one of  a series of problems  - including  two . fuel leaks, a wiring problem, brake computer glitch and cracked cockpit . window – to afflict the 787 which got off to a bad start when launched . three years late. Mike . Sinnett, chief engineer on the 787, said last month that the plane's . batteries have operated through a combined 1.3 million hours and never . had an internal fault. He said they were built with multiple protections to ensure that failures 'don't put the airplane at risk'. Incident: A 787 made a landing in Takamatsu after a burning smell was also . detected in its cockpit. Both All Nippon Airlines and Japan Airlines . have grounded their entire Dreamliner fleets . Complex: Parts for the flagship craft are constructed by firms around the world . Out of service: One of United Airlines six 787s sits on the tarmac at George Bush Intercontinental Airport in Houston .
similar incident in Boston. Overheated: The charred battery from the Dreamliner plane which made an emergency landing on January 16 in was also forced to make an emergency landing in All Nippon Airways flight was . forced to land on remain grounded while investigations continue. what went wrong . Investigators earlier said they