NP99sp Battery Kit for Garmin DriveAssist 51LMT-S - Long Life

In this review of the NP99sp Battery Kit for Garmin DriveAssist 51LMT-S, the bottom line is simple: this kit is for owners who want a reliable, higher-capacity replacement battery and the tools and guidance to install it themselves. The biggest reason to buy is the extended 750 mAh capacity battery combined with a one year guarantee and included how-to video, which removes the guesswork from replacing the internal battery. For drivers who need extra runtime or a backup cell, this kit bundles the key extras that most standalone batteries do not.

Key Features

• Extended Capacity: The 750 mAh, 3.7V lithium-ion cell provides longer runtime than the original, reducing the frequency of swaps or recharges.
• Complete Kit: The package includes the new battery plus the free tools needed for installation so users do not need to source specialty drivers.
• Instructional Video: A how-to video walks through the replacement procedure step by step to make the swap straightforward for non-technical users.
• One Year Guarantee: The kit is backed by a full one year money back guarantee when purchased from this seller, offering added confidence in reliability.
• Model Compatibility: Specifically designed to replace the internal battery in the Garmin DriveAssist 51LMT-S, avoiding fitment issues common with generic cells.

Who It's For

This kit is best for Garmin DriveAssist 51LMT-S owners who want to replace a failing internal battery or keep a charged spare for longer trips. It suits users who prefer a guided DIY approach since the package includes installation tools and a how-to video that reduce the need for professional service.

It is less suitable for someone who prefers manufacturer-authorized replacements from the original device maker or for devices other than the DriveAssist 51LMT-S, as the kit is purpose-built for this model. Also, those who do not want to open their unit should consider professional service instead.

Pros & Cons

Pros

• Higher capacity 750 mAh cell extends runtime compared with the original battery.
• Includes free installation tools so users have everything required for the swap.
• Clear how-to video reduces installation uncertainty for DIY repairs.
• One year money back guarantee provides post-purchase protection.

Cons

• Only compatible with the Garmin DriveAssist 51LMT-S, so it is not a universal replacement.
• Replacing an internal battery requires careful disassembly, which some users may prefer to avoid.

Specifications

Brand	NP99sp
Battery Capacity	750 mAh
Battery Voltage	3.7V
Compatible Model	Garmin DriveAssist 51LMT-S
Kit Contents	New battery, installation tools, how-to video
Warranty	One year money back guarantee (kit purchases only)

Our Verdict

The NP99sp Battery Kit for Garmin DriveAssist 51LMT-S is a practical, well-rounded replacement option for owners who want longer battery life and the confidence of step-by-step instructions. With a higher-capacity 750 mAh cell, included tools, and a one year guarantee, it represents good value for DIY-minded users who need a reliable swap and prefer to avoid multiple parts or hunting for instructions.

Frequently Asked Questions

Is this battery compatible with other Garmin models?
No. This kit is specified for the Garmin DriveAssist 51LMT-S and is not marketed as a universal replacement for other models.

Does the kit include tools for installation?
Yes. The package includes the necessary free tools to perform the battery replacement without buying additional parts.

What warranty or guarantee is provided?
The kit includes a one year money back guarantee when purchased from this seller, which covers defects or dissatisfaction within that period.