
At Amazon, clip the on-page coupon to get this 12V 6A Auto Battery Charger for $11. It's the best deal we've seen for this model. Shipping is free for Prime members. Buy Now at Amazon
- 12V, 6A output
- Compatible with AGM, gel, LiFePO4, and lead-acid batteries
- Digital display: real-time voltage, current, charge percentage, and status
- Pulse repair for mildly sulfated batteries
- Protections: reverse connection, short circuit, over-temperature, over-current
- Universal 100-240V input; operating range -10°C to +45°C

These lithium AAs hold a steady 1.5V output rather than the gradual drop-off you get with NiMH rechargeables, which matters for devices like game controllers or cameras that get finicky on low voltage. Apply coupon code "TLLFNROB" for a total savings of $15. Buy Now at Amazon
- High capacity 1.5V lithium power output
- Integrated charging and storage box
- Smart LED charging status indicator
- 3-hour fast charging via USB-C
- 2500 charge cycle lifespan

A 3-in-1 stand that charges your iPhone, Apple Watch, and AirPods simultaneously from a single pad is a practical way to consolidate your nightly charging routine. Apply coupon code "2FLAE42Z" for a total savings of $18. Buy Now at Amazon

SmallRig's NP-F970-style battery is a go-to for videographers running monitors, LED lights, or other NP-F-powered accessories on longer shoots, where capacity matters more than keeping the kit light. At $60, it's $20 off the $80 list price. Buy Now at Amazon
- 10500mAh true capacity for longer shoots
- PD 36W fast charging in 3.5 hours
- 54W dual-port charging for camera and phone
- OLED touch display shows remaining battery
- 8-layer protection for safer outdoor use

These rechargeable batteries handle their own charge cycles individually, so mismatched charge levels across batteries won't slow down the fastest ones, useful if you go through a lot of AA/AAA batteries for household electronics. At $34.73, it's about $2 off the $36.70 list price. Buy Now at Amazon
- Charge 8 AA or AAA batteries simultaneously
- Full charge in 3 to 5 hours
- Individual cell charging for optimal performance
- Smart technology automatically stops at peak capacity
- 8 LED indicators for real-time charge status

Handy for anyone juggling a laptop, tablet, and phone off one outlet, since the GaN design packs 128W across three ports without the bulk of older chargers, and it's currently $5.22 off the list price at Amazon. Buy Now at Amazon
- 128W total power output
- 3-in-1 multi-device charging
- Compact design with foldable prongs
- GaN III energy-efficient technology
- Universal fast charging compatibility

Handy for keeping a car, motorcycle, or seasonal vehicle battery topped off when it's sitting unused for weeks at a time, since it automatically switches to maintenance mode once fully charged. At $13.47, that's $8.03 off the $21.50 list price. Buy Now at Amazon
- Charges, maintains, and desulfates 12V lead-acid batteries
- Automatic pulse desulfation restores battery performance
- Spark-free connection for maximum safety
- Built-in protection against overcharging and short circuits
- Plug-and-play operation requires no manual settings

This charger works well if you own multiple Litheli U20 tools and don't want to swap a single battery back and forth while you work, since it charges two batteries at once. It's on Amazon for $59.43, about $7 off the $66 list price. Buy Now at Amazon
- Smart charging control for travel-ready power
- Charge two batteries simultaneously for increased efficiency
- Compact design for easy storage and portability
- Seamless energy sharing across multiple devices

Handy for travel since it skips the bulky puck and plugs directly into USB power, useful if you're often charging your Watch away from home. It's $4 off the list price at $10. Buy Now at Amazon
- Ultra-compact portable design with built-in keychain
- Strong magnetic wireless charging alignment
- 2500mAh battery provides multiple full watch charges
- Integrated multi-protection chip for safe charging
- Includes 18-month warranty and US-based support

A dead battery in a parking lot is a lot less stressful when you've got a jump starter in the trunk instead of jumper cables and a favor to ask, and this one's rated for 5,000A. It's $9 off the $57 list price on Amazon right now. Buy Now at Amazon
- 5000A peak current jump starts 12V vehicles instantly
- 59.2Wh power bank with dual USB charging ports
- 500 lumen LED flashlight with SOS and strobe modes
- 10 integrated safety protections against reverse connection and shorts
- LED display with 24-month standby battery life

Handy for anyone tired of buying disposable AAs for remotes, game controllers, or flashlights, since this set comes with a charger so you can reuse the same batteries for years. At $28, that's $7 (20%) off the $35 list price. Buy Now at Amazon
- Charges both lithium and NiMH AA batteries
- 3600mWh high-capacity power for high-drain devices
- Full charge in 3 hours with 8-slot dock
- 2500+ charge cycles with 0V activation technology
- Built-in multi-layer charging safety protection

Update: The price has changed to $35.90 since this was originally published.
Keeping one of these in your trunk means you won't need to flag down a stranger when your battery dies on a cold morning, and at $36 it's about $13 off the usual $49 price. Buy Now at Amazon
- 6000A peak power for large engines
- Jump starts up to 50 times per charge
- Compact design for portable storage
- Intelligent spark-proof and reverse polarity protection
- Emergency LED flashlight with three lighting modes

Handy for anyone shooting long days with a Sony camera that takes NP-BX1 batteries, since swapping in a fresh one beats waiting around for a single battery to charge. It's $3 off the usual $21 price. Buy Now at Amazon
- Triple camera runtime with three included batteries
- Charge three batteries simultaneously with independent LED status
- Versatile charging via USB and Type-C inputs
- Guaranteed compatibility with extensive Sony camera lineup
- Built-in multi-circuit safety protection and fire-resistant design

Handy for keeping a car, motorcycle, or lawn mower battery topped off during storage since it switches to maintenance mode once fully charged, and it's currently $7.27 off the $21.50 list price. Buy Now at Amazon
- Maximizes battery performance and extends lifespan
- Pulse charging technology for 12V lead acid batteries
- Automatic charging and maintenance with overload protection
- Clear LED charging status and mode indication
- Compact fire-resistant design with quick release connectors

Keeping a car, motorcycle, or lawn equipment battery topped off over winter storage is the main job here, and this automatic maintainer switches off once it's fully charged so you don't have to babysit it. At $14, that's about $5 (25%) off the $19 list price. Buy Now at Amazon
- Pulse technology extends battery performance and life
- Automatic overcharge protection with spark-free technology
- Compatible with all 12V lead-acid, AGM, and gel batteries
- Energy-saving design with zero output standby mode
- Includes quick-release ring terminals and 50amp alligator clamps

Keeping a car, motorcycle, or lawn tractor battery topped off through winter storage is exactly what this maintainer handles, switching to trickle mode once it's charged so you don't have to babysit it. At $14.16, that's about $7 off the $21.50 list price. Buy Now at Amazon
- Pulse charging technology extends battery life
- Automatic overcharge protection and maintenance
- Spark-free operation for enhanced safety
- Compact fire-resistant design
- Includes ring terminals and alligator clamp harnesses

Update: The price has changed to $99.99 since this was originally published.
Stalled batteries in cold weather or older vehicles are the main use case here, and this jump starter delivers enough amperage for most trucks and SUVs without needing another car around. Amazon has it for $100, which is $50 off the $150 list price. Buy Now at Amazon
- 4000A peak power for engines up to 12.0L
- 100W fast-charging jump starter fully charges in 1.2 hours
- 100W output for charging MacBooks and laptops
- Integrated LED screen for intuitive jumpstart status
- Multifunctional with triple USB ports and 400-lumen flashlight

Keeps a car, boat, or motorcycle battery topped off during storage without overcharging, and it works with both standard and lithium batteries, so you don't need separate chargers for different vehicles. At $92, that's $23 off the $115 list price. Buy Now at Amazon
- Compatible with Lithium, AGM, and Flooded batteries
- Dual function LED battery gauge
- Auto Maintain Mode for long-term storage
- Spark-free connection technology
- Weatherproof, portable, and wall-mountable design

These adapters let you use standard AA Eneloop rechargeables in devices that need C or D batteries, handy if you've already got a stash of AAs and don't want to buy separate C/D rechargeables. At $14.30, that's about 43% off the $25 list price. Buy Now at Amazon
- Convert AA batteries to C and D sizes
- Maintain high-capacity 2600mAh AA battery performance
- Lightweight design at 0.33 and 0.77 ounces
- Includes four C and four D adapters
- Compatible with all eneloop pro AA rechargeable batteries

Handy if you maintain multiple vehicles or batteries with different voltage needs, since it adjusts automatically instead of requiring separate chargers; it's $11.60 off the list price at Amazon. Buy Now at Amazon
- Supports 6V to 24V lead-acid batteries
- Pulse repair technology restores low-voltage batteries
- Six-point safety protection against faults and overheating
- LCD screen displays real-time voltage and current
- Compatible with golf carts, RVs, boats, and trucks