7 best rechargeable battery charger to be able to use your batteries as long as you want
Rechargeable batteries are a cost-effective and efficient solution to power your home's battery-operated electronics. Put your rechargeable batteries in your charger when they're low on power, and they'll be ready to use in a few hours.
Most chargers should work with any rechargeable battery of the appropriate type and size. While AA and AAA are the most frequent sizes supported, some chargers also fit C and D; check each product's specifications for a complete list of compatible sizes. Others can simultaneously charge up to 16 or even 40 batteries.
If you have a lot of gadgets, you'll need a lot of rechargeable batteries. Here are the best rechargeable battery chargers to keep them charged.
1. BONAI LCD Smart Battery Charger

With an independent charging slot, BONAI can randomly charge up to 4 batteries of 1.2V C D AA AAA, or 2 batteries of 9V Ni-MH/Ni-CD rechargeable batteries at the same time. The charging and discharging process of NiMH NiCD AA AAA C D batteries can be observed through an LCD screen.
If there are any defective batteries, an error icon will show up. LED indicators are for 9V Batteries: red for charging, green for a full charge, or no battery in the slot. This universal LCD battery charger will automatically power off when the temperature of the battery or the charger exceeds 60℃.
2. Energizer Rechargeable AA and AAA Value Charger

Conveniently constructed to charge 2 or 4 AA or AAA NiMH batteries, the Value Charger will have your batteries ready for use in as little as 5 hours. LED indicator lets you know when charging is complete, and the auto safety shuts off to prevent damaging overcharging.
You can use any of the Energizer Recharge batteries for the economical way to long-lasting power for all your electronic devices. Its worry-free safety features make sure that you get the most out of your battery performance.
3. EBL LCD Universal Battery Charger

The EBL Battery Charger can charge 1-8 Ni-MH/Ni-CD AAA/AA rechargeable batteries or 1-4 Ni-MH/Ni-CD C/D rechargeable batteries respectively. Every Slot has its own cycle, you will never worry about having to find two Low-power batteries for charging.
It can Intelligently auto-detect batteries' status. It comes with an advanced MCU control and -∆V function, over-heat, and over-current protection short-circuit protection, and non-rechargeable, defective battery detection.
4. Energizer AA and AAA Battery Charger Pro

Energizer Recharge Pro charges 2 or 4 AA or AAA NiMH rechargeable batteries at once. Its state-of-the-art Charge Status Indicator system visually and audibly alerts on your batteries charge levels You can get a full charge in 4 hours with the rapid charging power of Recharge Pro.
It comes with an auto safety shut-off and overcharge protection features to prevent damage from overcharging, helping to maximize battery life. It also comes with a built-in, fold-out plug design that allows you to easily store the Pro Charger Battery Charger when not in use.
5. POWEROWL 16 Bay AA AAA Battery Charger

Powerowl charger can quickly detect damaged batteries. The red indicator light will flash to let the user know about it. The smart charge function on chargers checks the charging conditions of the batteries, the temperatures of both the batteries and the charger, etc. This allows the charger to individually charge each battery under the best conditions.
6. EBL Smart Battery Charger

Controlled by MCU, EBL Smart automatically stop charging when detecting improper input voltage, defective or short circuit, or non-rechargeable batteries. It comes with a Negative delta V (- ∆V) cut-off function (except for 9V batteries), overcharge protection, short circuit protection, and non-rechargeable or bad cell detection making it easier to use. Its bright LCD screen shows the progress of the charging status clearly.
7. EBL 8-Bay Rechargeable Battery Charger

Heat dissipation design helps the EBL 808 battery charger to have a better function: overheat-detection to prevent over-charging. It is controlled by MCU, to automatically stop charging when it detects improper input voltage, defective or short circuits, or broken batteries.
It can charge AA and AAA Ni-MH Ni-Cd rechargeable batteries. It takes a very short time to recharge your batteries no matter how old they are, saving you time and energy with ease.