To: kolo55 who wrote (16277 ) 11/19/1999 10:23:00 PM From: P. Ramamoorthy Read Replies (3) | Respond to
Glad to see a reference to product safety in this thread. Product safety can affect "investment potential" in the Li-poly case. This is a topic least understood (may be, intentionally?). This was well covered by Lev in the last conf call. Re.: "Sony discontinued D size batteries." The safety of Li-Co batteries is proportional to the size of batteries. That shows why Sony gave up on Size D. That also would also mean that VLNC's Mn technology can be scaled up to larger size batteries without the safety concern. That should mean more markets for VLNC batteries. Lev talked about the voltage limits during recharge, say 4.25V or 4.257 volt limit on some Li-Co battery. When these limits are reached on Li-Co batteries, during the recharge cycle, (acc to Lev) it resulted in explosion. We have heard news about a laptop blowing up. This is the reason for elaborate control circuits on Li-Co batteries. (Aside - My Sony Infusion Li-ion batteries never charge to the same original capacity that states on the label.) If VLNC's Mn battery is not sensitive to overcharging during the recharge cycle, (acc to Lev it could go up to 5V, still no problem) there is not a need for control. UL approval must be easy. It means a good demand and lack of competition (for the next year or so). Both are bullish for the VLNC technology! Brokers can not appreciate the technical stuff. That could mean that VLNC Mn oxide batteries are almost ideal for laptop applications, other large volume applications like the electrical vehicle, etc.
