How long recharge batteries

Rechargeable batteries are often exposed to unfavorable temperatures. Extreme temperatures can shorten expected battery life, so store your batteries and devices in a cool place whenever possible. This temperature minimizes capacity loss while keeping the battery in operating condition and allowing self-discharge.

Chargers are designed for specific battery types; mixing chargers and batteries could result in unexpected problems. Disposal alkaline batteries are not rechargeable and should never be placed in a charger. Manufacturers also warn against mixing brands of rechargeable batteries in a charger.

Each brand should be charged separately to avoid any hazards. What do you do with your used or dead batteries? Store them in a non-metal container in a cool dry place until you can properly dispose of them. The Environmental Protection Agency EPA recommends taping the terminals of used batteries with electrical tape or by placing each battery in separate plastic bags.

Terminals that rub against each other could cause a spark. Never put loose batteries in a drawer or area where they may come into contact with metal items such paper clips or steel wool.

The charger supplied is mah. How long should it charge at that rate to be fully charged? I do not wish to over charge as I understand you risk a problem of exploding batteries etc.

Whilst with the parallel connection of batteries, voltage is constant but capacities add. Is that 4. The intention is to charge them in the set pack in series 4. I have to inform you that the amperage that the led lights have as a load is approximately around mah. Is it OK to charge a 12v drill battery with a 18v 0.

If so, how long will the charging process take please? Thanks cliff. It is only matter of mAh increase by mAh units whilst at this time it maintains equally same battery voltage. It is not a voltage change therefore there should not be an obstacle for the battery upgrade. Can I replace my mAh Canon battery with a mAh?

It has the same volts just higher mAh — want to make sure it will work in my camera before ordering. Ann, certainly the battery can be replaced from the mAh for the one with higher mAh power storage capacity.

It will hold the power charge for longer when in use. Does this Charge Calculator base its output charge times on the batteries in question being at a zero state of charge or are the Charge Times listed for a given battery the same regardless of how much charge remains in the battery at the time they are put in the Battery Charger?

Other than this confusion on my part, I really found this calculator helpful. Thanks for your help. And that hurts as they were the better quality kind. The voltage 1. Are you able to fully discharge your batteries and then fully charge them all together?

This is the preferred method. Also, what type of batteries are they? Here to your question; not just occasionally I use a different travel charger, while each of the batteries is not equally discharged, I simply charge them at that state as they are.

Later on at home, my main charger discharges them and then charging goes on, which fixes their memory to normal if they are smart. First I place them into a TV or video remote control. When they stop working there, then I use charger. Please help me. Thank you very much in advance.

Hello Somi, Could you supply 3 additional kinds of information for charging those batteries in twos, as the needed info is missing. I have a RC helicopter but the battery it uses takes forever to charge and then allowance is approximately 10 minutes time of flight consequently having have to recharge the battery again and again.

The battery specs are 3. My question is if I buy a 3. How long time does it take to discharge a rechargeable battery in question.

Specifications of the battery:. I have developed a charging ckt that I can set the charging current to any value from ma to 1 amp. At 1 amp my circuit shuts down in 5 minutes and disconnect the batteries from the charger. All the batteries test good on a load tester. I can with these set up conditions, charge several 1.

These chargers usually require the batteries to be inserted in pairs to complete the circuit and recharge the batteries. When the battery is fully charged this will be indicated on the LCD display and the charger will stop charging or revert to a trickle charge to keep the battery topped up. This achieved by incorporating a computer chip or microprocessor into the charger which controls the various aspect of charging, and can usually also detect faulty batteries.

The benefits of an intelligent charger are that the correct amount of charge is delivered so there will be no over or under recharging. Because intelligent chargers have automatic shut-off, this allows them to have a higher power output so providing faster charging than a manual charger, depending on the capacity and size of the battery. They will also usually offer individual channel charging, because a microprocessor controls charging to each individual battery.

This allows odd numbers of batteries to be charged, for example one or three, whereas most manual chargers will require batteries to be charged in pairs to compete the charging circuit. It also means there is no issue in charging different battery capacities, or different levels of charge, unlike manual chargers which require similar capacity and charge levels to charge effectively.

The disadvantage of an intelligent chargers is that they are slightly more expensive than a manual charger, however it is worth considering the investment in a good charger as comparable to the investment made in rechargeable batteries.

Please also note that 9 volt PP3 size rechargeable batteries will not usually be charged intelligently at a fast charge rate, due to the higher voltage of the battery. At this rate of charge there should be no detrimental effect on your rechargeable batteries. By comparison a super-fast charger will typically charge a rechargeable NiMH battery in 15 — 30 minutes.

This offers huge convenience, especially if you are left with no replacement batteries which is the big advantage with this type of charger.

However the extremely high currents delivered can heat up a rechargeable battery, causing it to deteriorate quickly. It is estimated that a NiMH rechargeable battery might only last for 50 — 75 recharge cycles if charged mostly in a super-fast charger, instead of the average recharge cycles normally achieved. We therefore recommend that this type of super-fast charger should be used only occasionally, mixed with normal charging at regular intervals. Consider using a super-fast charger as a back up to a normal charger, rather than as an alternative to a normal or intelligent charger, this should allow you to get the most out of your rechargeable batteries.

Most battery chargers will charge AA and AAA sized rechargeable batteries regardless of whether they are Intelligent or Manual chargers. Some will also charge 9 volt batteries — but be aware that the charging times for 9 volt batteries will be much longer in comparison. Universal chargers will charge a range of battery sizes which usually includes AA, AAA, C, D and 9 volt rechargeable batteries, but always check the product details or contact our customer service team to ensure you find the most suitable charger for your batteries.