The most gentle of these is called trickle charging.

Boat owners are thrilled having their batteries always ready to go thanks to solar trickle charging.

A variation of trickle charging is fast charging.

Remember, overnight trickle charging will conceal nicad faults from an unsuspecting user.

Trickle charging is possible via USB data cable.

The trickle charging then equals the energy expended by the lead-acid battery in splitting the water in the electrolyte into hydrogen and oxygen gases.

Trickle charging is not recommended, as recombination is not provided for, and excess hydrogen will eventually vent, adversely affecting battery cycle life.

Apple adds that most lithium-ion polymer batteries use what's called a fast charge to charge your device to this 80 per cent battery capacity before switching to trickle charging.

A service life of 5 years should be expected if the batteries are used most often in the 'floating' or 'standby' modes of operation, where top-up trickle charging is regular and discharge is infrequent.

A typical intelligent charger fast-charges a battery up to about 85% of its maximum capacity in less than an hour, then switches to trickle charging, which takes several hours to top off the battery to its full capacity.

External expansion Built-in low insertion force port (LIF- PFS ) connects to a Docking Holster providing communications (via Psion 3Link peripherals) to PCs and printers, external power and battery trickle charging.

The Fisker Hybrid will be offered with an optional roof-integrated solar photovoltaic generation system supplied by Asola to provide power for ventilation when parking, pre-air conditioning of the vehicle, supplemental cooling of the lithium-ion battery pack, and opportunity trickle charging of the vehicle batteries.

In 1975, Simplex introduced the 4207, a system similar in design to the 4208, but with updated features such as card-based modularity, DC battery trickle charging, compatibility with custom COP and read-back systems for pre-multiplex building control, and voice evacuation for large buildings.