Hydrofarm Electric Timer Poof

[br26]

Noticed some issues with this timer and replaced it . Curious of how it functions, I ripped it apart . The rechargeabale nickel metal hydride seems to have exploded!

Did not exceed watts or ohms. Powered 2 , 600w digis.

Saw one thread in 2010 on digitals not working properly with this timer.

Brand of the battery is Troily.

http://www.homedepot.com/catalog/pdfImages/42/42a0ad92-14d5-4be4-bd7f-3e18f2cf2b76.pdf

XINXIANG XINXIANGTROILY POWER SOURCE FACTORY TROILY POWER SOURCE FACTORY TROILY POWER SOURCE FACTORY
TEL:0373 TEL:0373-2681678 2681678 2681678 FAX: FAX: FAX:2681236 2681236 2681236
JINJIAYING VILLAGE WEIBIN AREAS XINXIANG CITY P.R. CHINA


Section IV – Fire and Explosion Hazard Data
Flammable Limits: Not available
But when the short circuit occurred inside the battery due to the leakage or the breach of
the separator , it may cause a tiny explosion to break and spread the anode and cathode into
parts and hit the person nearby. It may hurt the eye by accident. Safety precaution must be
taken against this accident.
In case of fire, it is permissible to use any kind of extinguishing medium on these batteries
or their packing material. Cool exterior of batteries if exposed to fire to prevent rupture.
Unusual Fire and Explosion Hazards are not available.

 

[br26]

 

[1TokeRedeux]

go poof! LOL

 

[stoned-trout]

I lost count of how many of timers I have had fail,melt ,smoke ect....yeehaw.. and I never used more juice than they were supposed to handle..if its a decent setup I like intermatic waterheater timers ..haven't had one fail but their not digital

 

[Mikell]

^Intermatic FTW

 

[Dirty Harry]

It seems the charging circuit failed to stop charging after the battery was full. That caused the battery to overcharge/overheat, and the battery failed as it was designed to. Not exactly an explosion but probably a good POP.

 

[RoostaPhish]

If you are running 120v, you are definitely hitting the top limits with these simple timers. Usually you go by the 80% mark. 2 600's at 120v is 12 amps. And those timers are only rated for 15 amps. Unless this is a 240v timer and you are running 240. Doesn't look like it however. And you are correct that some companies like sunlight sup. are recommending that you NOT USE these kind of timers with digital ballasts.